Question

How do you write a problem that can be solved using proportions. Write the proportion and solve the problem?

Answer 1

A proportion problem is written and solved by setting up two equilivant fractions.

Explanation:

An common example is a percentage problem. The percent can be written as a fraction with a denominator of 100. The equilivant fraction is written as the part over the whole

`(part)/(wh) = %/ 100` If you know the percent and the total or whole it is possible to solve for the part or amount of the percentage can be solved using a proportion.

`x/120 = (15%)/100` Multiplying both sides by 120 will leave the unknown isolated by itself (x)

`x/120 xx 120 = 15 /100 xx 120`

this gives

`x = 18`