Which pair of ratios forms a proportion?
A) $\frac { 5 } { 1 } , \frac { 1 } { 5 }$
B) $\frac { 5 } { 37 } , \frac { 37 } { 5 }$
C) $\frac { 10 } { 75 } , \frac { 5 } { 37 }$
D) $\frac { 74 } { 10 } , \frac { 37 } { 5 }$
E) $\frac { 26 } { 32 } , \frac { 5 } { 11 }$

Question

Quizplus · Accepted Answer

Two ratios form a proportion if their cross products are equal. For choice D, $\frac { 74 } { 10 } = \frac { 37 } { 5 }$, both simplify to $\frac { 74 } { 10 } = 7.4$ and $\frac { 37 } { 5 } = 7.4$, showing they form a proportion.

Which Pair of Ratios Forms a Proportion? A) 51,15\frac { 5 } { 1 } , \frac { 1 } { 5 }15​,51​

Which Pair of Ratios Forms a Proportion?
A) $\frac { 5 } { 1 } , \frac { 1 } { 5 }$