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Help with describing the procedure for solving a proportion. What is the difference between a ratio and a proportion?

1 Answer

1 vote

we have that

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0

and

A proportion is an equation in which two ratios are set equal to each other

example


(a)/(b)=(c)/(d)

the procedure to solve a proportion is

step 1

Multiply in cross

so


a*d=b*c

step 2

solve for the desired variable

example: solve for variable a


a=(b*c)/(d)

User Johnbaltis
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