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Finding the Fourth Proportional to 8,313.60, 11,472.60 and 4,776.72

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Solution

The fourth proportional to 8,313.60, 11,472.60 and 4,776.72 is: 6,591.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,313.60 : 11,472.60 = 4,776.72 : x
  2. Step 2: Convert to fraction form
    8,313.60/11,472.60 = 4,776.72/x
  3. Step 3: Cross multiply
    8,313.60x = 11,472.60 × 4,776.72
  4. Step 4: Simplify right side
    8,313.60x = 54,801,397.87
  5. Step 5: Solve for x
    x = 54,801,397.87/8,313.60
  6. Step 6: Final answer
    x = 6,591.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.