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Finding the Fourth Proportional to 8,373.92, 11,553.64 and 5,391.48

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Solution

The fourth proportional to 8,373.92, 11,553.64 and 5,391.48 is: 7,438.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,373.92 : 11,553.64 = 5,391.48 : x
  2. Step 2: Convert to fraction form
    8,373.92/11,553.64 = 5,391.48/x
  3. Step 3: Cross multiply
    8,373.92x = 11,553.64 × 5,391.48
  4. Step 4: Simplify right side
    8,373.92x = 62,291,218.99
  5. Step 5: Solve for x
    x = 62,291,218.99/8,373.92
  6. Step 6: Final answer
    x = 7,438.72

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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.