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Finding the Fourth Proportional to 7,391.92, 11,092.02 and 3,929.08

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Solution

The fourth proportional to 7,391.92, 11,092.02 and 3,929.08 is: 5,895.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,391.92 : 11,092.02 = 3,929.08 : x
  2. Step 2: Convert to fraction form
    7,391.92/11,092.02 = 3,929.08/x
  3. Step 3: Cross multiply
    7,391.92x = 11,092.02 × 3,929.08
  4. Step 4: Simplify right side
    7,391.92x = 43,581,433.94
  5. Step 5: Solve for x
    x = 43,581,433.94/7,391.92
  6. Step 6: Final answer
    x = 5,895.82

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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.