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.

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.

One and eight tenths is to two as four and five tenths is to five.

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.

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

Express the sentence as a proportion.

Ten is to fifteen as four is to six.