I am changing needle size to achieve the fabric I like but I can’t figure out the ratio in doing that – the gauge given for the yarn is 6″ to an inch . . My swatch was 48 st. and should have measured 8″but I changed to #5 needles. On #5 needles , 48 sts gave me a swatch only 7.25 inches wide. There is answer out there somewhere, I know but for the life of me my calculations end up looking like a Click and Clack weekly puzzler. Can someone help me?