IF of two equal Reasons the one is greater than a third, the other shall be so like∣wise.
AB: | CD: | EF. |
Demonstration. Seeing there is a greater reason of A to B, than of E to F, A shall contain more times any aliquot part of B, than E contains a like aliquot part of F, (by the 6th. Definition.) Now C contains a like aliquot part of D, as ma∣ny times as A contains that of B, seeing there is the same reason of A to B, as of