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

1 Answer
David Drayer
Jul 13, 2017

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

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