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Finding the Fourth Proportional to 8,321.32, 12,472.26 and 4,424.68

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Solution

The fourth proportional to 8,321.32, 12,472.26 and 4,424.68 is: 6,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.32 : 12,472.26 = 4,424.68 : x
  2. Step 2: Convert to fraction form
    8,321.32/12,472.26 = 4,424.68/x
  3. Step 3: Cross multiply
    8,321.32x = 12,472.26 × 4,424.68
  4. Step 4: Simplify right side
    8,321.32x = 55,185,759.38
  5. Step 5: Solve for x
    x = 55,185,759.38/8,321.32
  6. Step 6: Final answer
    x = 6,631.85

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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.