Numarul 2,75 = 275/100 = 11/4
Numarul 1,8(3) = (183-18)/90 = 165/90 = 11/6
Media geometrica a numerelor a si b = radical (a*b)
In cazul nostru:
Media geometrica [2,75; 1,8(3)] = radical (11/4 * 11/6) = radical [11*11/(2*2*6)] =
= 11/2 * radical (1/6) = 11/2 * 1/radical 6 = 11/2 * (radical 6)/6 = 11/12 * radical 6