Somtochukwu

A proportion is the equality of ratios. Therefore, 3/4 and 9/12 are equal, so we may say;

3 : 4 = 9 : 12

The sign of equality is replaced by the sign :: A proportion is usually written as follows:

3 : 4 :: 9 : 12

which is read as 3 is to 4 so is 9 to 12.

The first and fourth terms are called the extremes.
The second and third terms are called means.
The product of the extremes = the product of the means.

There are three (3) methods to solving proportions and they are;

1. The Unitary Method
2. The Rule of Three
3. The Fractional Method

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