Home / 10,640.64-15,961.68-3,617.76

Finding the Fourth Proportional to 10,640.64, 15,961.68 and 3,617.76

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Solution

The fourth proportional to 10,640.64, 15,961.68 and 3,617.76 is: 5,426.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640.64 : 15,961.68 = 3,617.76 : x
  2. Step 2: Convert to fraction form
    10,640.64/15,961.68 = 3,617.76/x
  3. Step 3: Cross multiply
    10,640.64x = 15,961.68 × 3,617.76
  4. Step 4: Simplify right side
    10,640.64x = 57,745,527.44
  5. Step 5: Solve for x
    x = 57,745,527.44/10,640.64
  6. Step 6: Final answer
    x = 5,426.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.