Question

Which of the following shows a proportion?

four over nine equals eighteen over eight

three over eight equals six over four

six over twelve equals eight over four

nine over fifteen equals twelve over twenty.

Answer 1

van somebody please help me

Answer 2

cross multiply and see which option is true

Answer 3

\(\large \frac{4}{9} = \frac{18}{8}\)

cross multiply

\(\large 4\times 8 = 9 \times 18\)

\(\large 32 = 162\)

false

Answer 4

similarly try other options and see for which you get true

Answer 5

yeah, cross multiply or simply check if either side is the same ration, and if not, the statement is not true.
clearly \(\frac{4}{9} \neq \frac{18}{8} \) so this statement is not true

Answer 6

3/8 = 6/4
(3)(4) = (6)(8)
12 = 48 <-- incorrect

6/12 = 8/4
(6)(4) = (8)(12)
24 = 96 < -- incorrect

9/15 = 12/20
(9)(20) = (12)(15)
180 = 180 < -- correct .....this is your answer :)