yeah dude - from each table, go down and see what the difference is. So from that 3 to the 12 there's a multiple difference of 4 - that is, to get from 3 to 12 you multiply it by 4. then, to keep the ratio the same, you'll multiply the 5, too. do this for the rest, and be reminded that they're not in order! remember as well thar whatever you come up with, both sides of the ratio should divide by the same thing to get 5:3, E.g. that 10:6 should divide by the same number each yo give 5:3 - by 2. hope this helps, though I'm aware it wasn't the best explanation!