## anonymous one year ago Which pair of ratios form a proportion? 2 : 3 and 3 : 4 8 : 12 and 16 : 20 4 : 7 and 12 : 21 9 : 15 and 10 : 16

1. calculusxy

You are really looking for equivalent "fractions"

2. calculusxy

$\frac{ 2 }{ 3 } \neq \frac{ 3 }{ 4 }$

3. britnee_paige99

4 : 7 and 12 : 21 are equal

4. anonymous

yeah 4:7 and 12:21