÷you need to find how many parts there are ; 4 + 3 = 7
you then need to divide the number by the parts ; £56 ÷ 7 = £8
1 part = £8
4:3, 4 parts : 3 parts.
4 x £8 = £32
3 x £8 = £24
4:3 = £32:£24
to check your answer ;
add both parts of your final answer , £32 + £24 = £56