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Finding the Fourth Proportional to 8,898.80, 13,337.40 and 3,963.20

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Solution

The fourth proportional to 8,898.80, 13,337.40 and 3,963.20 is: 5,939.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.80 : 13,337.40 = 3,963.20 : x
  2. Step 2: Convert to fraction form
    8,898.80/13,337.40 = 3,963.20/x
  3. Step 3: Cross multiply
    8,898.80x = 13,337.40 × 3,963.20
  4. Step 4: Simplify right side
    8,898.80x = 52,858,783.68
  5. Step 5: Solve for x
    x = 52,858,783.68/8,898.80
  6. Step 6: Final answer
    x = 5,939.99

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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.