Proportions

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TACHS Math › Proportions

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1

Solve for the missing variable in the following proportion:

$\frac{8}{3}=\frac{x}{9}$

Explanation

Proportions are ratios that are equal to one another. We can solve for the missing variable by using cross multiplication to develop an equation.

$\frac{8}{3}\times\frac{x}{9}$

$8\times 9=x\times 3$

Simplify.

Divide both sides of the equation by .

$\frac{72}{3}=\frac{3x}{3}$

Solve.

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