Răspuns:
Explicație pas cu pas:
a/2 = b/6 = c/8 = k -> coeficient de proportionalitate
=> a/2 = k => a = 2 k
b/6 = k => b = 6 k
c/8 = k => c = 8 k
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a × b × c = 768
2 k × 6 k × 8 k = 768
96 k³ = 768
k³ = 768 : 96 ⇒ k³ = 8 ⇒ k =∛8 ⇒ k = 2
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a = 2 k = 2 × 2 => a = 4
b = 6 k = 6 × 2 => b = 12
c = 8 k = 8 × 2 => c = 16
