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Finding the Fourth Proportional to 9,939.97, 14,910.02 and 2,920.10

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Solution

The fourth proportional to 9,939.97, 14,910.02 and 2,920.10 is: 4,380.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939.97 : 14,910.02 = 2,920.10 : x
  2. Step 2: Convert to fraction form
    9,939.97/14,910.02 = 2,920.10/x
  3. Step 3: Cross multiply
    9,939.97x = 14,910.02 × 2,920.10
  4. Step 4: Simplify right side
    9,939.97x = 43,538,771.50
  5. Step 5: Solve for x
    x = 43,538,771.50/9,939.97
  6. Step 6: Final answer
    x = 4,380.17

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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.