ratio and proportion

[kapseraj10]

Pls give the answer for the problem "If A:B=3:4, B:C=8:9, C=15:16 then find A:B:C, A, A:B:C"

 

[stapel]

Pls give the answer...

Sorry, but this isn't a "cheetz" site. Please re-read the forum rules.

...for the problem "If A : B = 3 : 4, B : C = 8 : 9, C : D = 15 : 16, then find A : B : C, A : D, A : B : C : D"

What have you tried? How far have you gotten? Where are you stuck? For instance, you noted that the first two ratios each contain "B" and that you could multiply the first ratio by 2 to get "A : B = 6 : 8", which then allows one to equate with the second ratio. What then?

Please be complete. Thank you!

 

[HallsofIvy]

It is helpful to know that the "proportion" A:B= 3:4 is the same as the fraction \(\displaystyle \frac{A}{B}= \frac{3}{4}\). Write the other proportions the same way and do some fraction arithmetic.