The unit of measurement mile is derived from the Latin word Mille and the miles is considered equivalent to 5000 feet and with the modern mile making miles equal to 5280 feet or 1760 yards. Miles have been derived from the English work gyrd, which has the meaning measure or rod.

Yard is the United States and imperial customary length unit having symbol yd and miles on other hand are the United States customary measurement systems length unit having a symbol mi and 1 nautical mile has a value of 2025.37 yards. Yard and miles both are considered as the unit for measuring the length and in order to convert the length measurements from one unit to another, it is required to convert one unit to the base unit using a formula known as conversion formula. After that, the base unit is converted to the unit of measurement that is targeted. 

The length measurement of a mile can be converted into yard measurement by multiplying the conversion ratio with the length. Miles is abbreviated as mi, and is regarded as an imperial measurement for instance one mi. Yard is also considered as an imperial measurement and the abbreviation of yard is yd. Yard was agreed to be defined as yard by the countries such as United States, Australia, United Kingdom, Canada, South Africa and New Zealand in year 1959. Moreover, yard has been regarded as the common form of measurement and this is attributable to the fact that the usage of this particular measurements dates back to the time of Romans. Carpets and fabrics in the United States are sold by the value of square yard, and this square yard equates to the area of 1 yard by 1 yard that is one yd by one yd.

A unit of length of mile is equivalent to 1760 yards and the relationship between yards and miles can be represented by the following formula that is
1 mi = 1760 yards

From the above equation, the value of four unit’s mile in terms of yards can be found. To convert the miles into yards, the value of miles are multiplied by 1760.
4 mi= 1760*4 yards= 7040 yards

Therefore, 4 units of miles is equivalent to 7040 yards.

However, the valuation of miles into yards or the relationship between these two units of measurement can be explained. The overall arguments is the argument presented for the decimal versus duodecimal. It is the natural and obvious choice for the truth and is regarded as complete arbitrary.

For the measurement of the length, it is recommended to use a tape measure or ruler and the user can found it at a home centre or retailer. They have equated yard to the value of 0.9144 meters. It is required by the ruler to get the right type of ruler so that the needs of measurement is fulfilled and the rulers are available either in the metric or imperial or in the combination of both values.