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Finding the Fourth Proportional to 6,463.92, 9,695.76 and 2,081.28

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Solution

The fourth proportional to 6,463.92, 9,695.76 and 2,081.28 is: 3,121.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,463.92 : 9,695.76 = 2,081.28 : x
  2. Step 2: Convert to fraction form
    6,463.92/9,695.76 = 2,081.28/x
  3. Step 3: Cross multiply
    6,463.92x = 9,695.76 × 2,081.28
  4. Step 4: Simplify right side
    6,463.92x = 20,179,591.37
  5. Step 5: Solve for x
    x = 20,179,591.37/6,463.92
  6. Step 6: Final answer
    x = 3,121.88

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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.