Question

4. Determine whether the following are a) 2,3,4,5 b) 4, 6, 8, 12 in proportion.​

Answer 1

Step-by-step explanation:

$a) \: \: \: \: \: \: \: \: 2 \: \: \: 3 \: \: \: \: 4 \: \: \: \: 5 \\ \\ \frac{2}{3} = \frac{4}{5} \: \: \: is \: \: \: false. \\ \\ \\ \\ 2 \: \: \: 3 \: \: \: \: 4 \: \: \: \: 5 \: \: \: are \: not \: in \: propotion. \\ \\ \\ \\ \\ \\ \\ b) \: \: \: \: \: \: 4 \: \: \: \: \: 6 \: \: \: \: \: 8 \: \: \: \: \: \: 12 \: \: \: \: \: \\ \\ \frac{4}{6} = \frac{8}{12} \\ \\ \\ \frac{2}{3} = \frac{2}{3} \: \: \: \: \: \: \: \\ 4 \: \: \: \: \: 6 \: \: \: \: \: 8 \: \: \: \: \: \: 12 \: \: \: \: \: \: are \: \: \: \: in \: propotion.$

Answer 2

Answer:

B

Step-by-step explanation:

a) 2,3,4,5

product of means = product of extreme

2×5=3×4

10 is not equal to 12

b)4,6,8,12

product of means = product of extreme

4×12=6×8

48=48

So, they are in proportion