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Finding the Fourth Proportional to 9,172.79, 13,761.03 and 2,932.61

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Solution

The fourth proportional to 9,172.79, 13,761.03 and 2,932.61 is: 4,399.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,172.79 : 13,761.03 = 2,932.61 : x
  2. Step 2: Convert to fraction form
    9,172.79/13,761.03 = 2,932.61/x
  3. Step 3: Cross multiply
    9,172.79x = 13,761.03 × 2,932.61
  4. Step 4: Simplify right side
    9,172.79x = 40,355,734.19
  5. Step 5: Solve for x
    x = 40,355,734.19/9,172.79
  6. Step 6: Final answer
    x = 4,399.50

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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.