: You will need 2 wood and 6 metal to get 3 ingots (2:6).

: Multiply any but same number with both in the ratio to find out how much wood and metal you will need.

Same goes with the following.

: In case of sparkpower the ratio is (1:6)(sparkpower: metal)

: In case of Anglergel the ratio is (1:24)

(Anglergel: metal)