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Finding the Fourth Proportional to 9,906.79, 14,862.12 and 3,666.85

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Solution

The fourth proportional to 9,906.79, 14,862.12 and 3,666.85 is: 5,500.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,906.79 : 14,862.12 = 3,666.85 : x
  2. Step 2: Convert to fraction form
    9,906.79/14,862.12 = 3,666.85/x
  3. Step 3: Cross multiply
    9,906.79x = 14,862.12 × 3,666.85
  4. Step 4: Simplify right side
    9,906.79x = 54,497,171.09
  5. Step 5: Solve for x
    x = 54,497,171.09/9,906.79
  6. Step 6: Final answer
    x = 5,500.99

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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.