Use cross products to determine whether the proportion is true or false.
$\frac{7}{4}=\frac{20}{12}$

Express the sentence as a proportion.

A paint mixture uses 2.5 liters of blue paint for every 4 liters of white paint, and another mixture uses 7.5 liters of blue paint for every 12 liters of white paint.

A trail map shows 3.6 miles in 1.2 hours, while another section shows 7 miles in $2\frac{1}{3}$ hours.

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.

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

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.

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.

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