The ratio is 2:7, and we have 4:__, so 2:7 = 4:x. 2*2 = 4, so 7*2 = 14. x = 14.
We do the same for the others: 6*2 : 6* 7 = 12:42.
Continue to do the same for the other two.
If you don't understand, you can do it step-by-step with me, but plain refusal to actually look at the hints i give, and instead, you just want an answer and pretend that i didn't write anything. Your behavior won't get you anywhere in life, and i'd suggest you stop.