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Finding the Fourth Proportional to 8,921.46, 13,372.17 and 4,237.64

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Solution

The fourth proportional to 8,921.46, 13,372.17 and 4,237.64 is: 6,351.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.46 : 13,372.17 = 4,237.64 : x
  2. Step 2: Convert to fraction form
    8,921.46/13,372.17 = 4,237.64/x
  3. Step 3: Cross multiply
    8,921.46x = 13,372.17 × 4,237.64
  4. Step 4: Simplify right side
    8,921.46x = 56,666,354.43
  5. Step 5: Solve for x
    x = 56,666,354.43/8,921.46
  6. Step 6: Final answer
    x = 6,351.69

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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.