Properties of Proportions

 $If\ \frac{a}{x}=\frac{y}{5}$  then  $\frac{a}{y}=\frac{?}{?}$  

•  $\frac{x}{5}$  

•  $\frac{5}{y}$  

•  $\frac{y}{5}$  

•  $\frac{\left(y+5\right)}{5}$  

• $\frac{z}{x}$

• $\frac{x}{z}$

• $\frac{z}{y}$

• $\frac{z}{c}$

• $\frac{\left(31+y\right)}{31}$

• This does not represent a property.

• $\frac{12}{y}$

• $\frac{\left(31+y\right)}{y}$

 $If\ \frac{3}{12}=\frac{9}{36}\ Then\ \frac{12}{3}=\frac{?}{?}$  

•  $\frac{12}{36}$  

•  $\frac{36}{9}$  

•  $\frac{1}{4}$  

•  $\frac{45}{36}$  

Is the following true or false?

• True

• False

 $\frac{15}{25}=\frac{18}{x}$  

• x=28

• x=10

• x=30

• x=11

There were 5 ice cream cones for every 3 brownies sold at the ice cream shop. If there were 24 brownies sold, how many ice cream cones were sold?

• 8
• 15
• 40
• 29

• $17.50

• $1.75

• $26.50

• $49.50

• x=7

• x=5

• x=6

• x=8

Find a ratio that is equivalent to 2:5.

• 30:12

• 8:25

• 4:12

• 6:15