## waheguru Group Title Can someone pleas ehelp me with this question, i am confused. Its solving porportions and i am doing 8:4:x = 2: y:6 how do i solve this? one year ago one year ago

1. wio Group Title

It turns out into a system of equations.

2. wio Group Title

$8:4:x=c(2:y:6) \\ 8 = 2c \\ 4 = cy\\ x = 6c \\$

3. wio Group Title

First solve for c, then solve for x and y.

4. waheguru Group Title

where does the c come from?

5. skullpatrol Group Title

The alphabet.

6. wio Group Title

c is there to represent the fact that two proportional things are going to be equal if you multiply one of them by c.

7. skullpatrol Group Title

You need to find a c such that the above equation is true.

8. waheguru Group Title

I know a/b = c/d and a*d=b*c but this euqstion had 3 terms which is confusing me

9. skullpatrol Group Title

Have you solved for c?

10. waheguru Group Title

umm.

11. waheguru Group Title

im not sure how

12. wio Group Title

$8=2c$

13. wio Group Title

$\frac{8}{2} = \frac{4}{y} \\ \frac{8}{2} = \frac{x}{6}$

14. waheguru Group Title

but how does 8 = 2c?

15. skullpatrol Group Title

$$8=2c$$ $$\frac{1}{2}*8=\frac{1}{2}*2c$$ $$4=(\frac{1}{2}*2)c$$ $$4=1c$$ $$4=c$$

16. skullpatrol Group Title

$$8:4:x = 2: y:6$$ $$8:4:x = c(2: y:6)$$

17. skullpatrol Group Title

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