Write the sentence as a proportion then determine whether the proportion is true or false.
One and eight tenths is to two as four and five tenths is to five.

$\frac{1 \frac{8}{10}}{2} = \frac{4 \frac{5}{10}}{5}$ ; False

$\frac{2}{1 \frac{8}{10}} = \frac{5}{4 \frac{5}{10}}$ ; True

$\frac{1 \frac{8}{10}}{2} = \frac{4 \frac{5}{10}}{5}$ ; True

$\frac{2}{1 \frac{8}{10}} = \frac{5}{4 \frac{5}{10}}$ ; False

Master Solving Proportions Example 1 with a bite sized video explanation from Jennifer Canizales

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Determine whether the proportion is true or false.

$\frac{1 \frac{2}{3}}{3} = \frac{3 \frac{1}{3}}{6}$

Determine whether the proportion is true or false.

$\frac{2.4}{6} = \frac{1.2}{4}$

Use cross products to determine whether the proportion is true or false.

$\frac{7}{4} = \frac{20}{12}$

Use cross products to determine whether the proportion is true or false.

$\frac{4}{9} = \frac{12}{27}$

Write the sentence as a proportion then determine whether the proportion is true or false.

Four bags of flour costs \$12, and eight bags of flour costs \$18.

Solve the proportion using cross products.

$\frac{5}{8} = \frac{k}{24}$

Solve the proportion using cross products.

$\frac{2.5}{5} = \frac{p}{12}$

Solve the proportion using cross products.

$\frac{\frac{1}{3}}{\frac{3}{8}} = \frac{\frac{2}{5}}{n}$

Write the sentence as a proportion then determine whether the proportion is true or false.One and eight tenths is to two as four and five tenths is to five.