Question

find the fourth proportion of 1/3,2/5 and 8.4​

Answer 1

Answer:

Step-by-step explanation:

a:b::c:d

Product of mean= product of extreme

a*d=b*c

1/3:2/5::8.4:x

1/3x=2/5*84/10

X=2/5*42/5*3/1

X=252/25