7 is to 35 as 5 is to?

7/35 = 5/x

You have a proportion here.

A proportion is a statement that two ratiOS are equal. The numbers that form a proportion are called the terms of proportion. There is a special relationship between the terms, called the cross products property.

In the proportion that you have, 7 and x are called the extremes of the proportion, and 35 and 5 are called the means. In a proportion, the product of the means equals to the product of the extremes. So,

7/35 = 5/x

(7)(x) = (35)(5)

7x = 175

7x/7 = 175/7

x = 25

Thus 7 is to 35 as 5 is to 25.