2 Cross-multiply to see if the ratio forms a proportion.Select Yes if it forms proportion and No if it does not. (4)/(9)=(16)/(36) No Yes

To determine if the given ratio forms a proportion, we need to cross-multiply and check if the products are equal.<br /><br />Cross-multiplying the given ratio:<br />$\frac{4}{9} = \frac{16}{36}$<br /><br />$4 \times 36 = 9 \times 16$<br /><br />$144 = 144$<br /><br />Since the products are equal, the given ratio forms a proportion.<br /><br />Therefore, the answer is Yes.