1. 400
  2. 800
  3. 1200
  4. 1400

Solution:

5/7 = X/560

Multiplying both sides by 560 cancels on the right

560 × (5/7) = (X/560) × 560

560 × (5/7) = X

X = 560 × (5/7)

X = 400

Therefore

5 : 7 = 400 : 560

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