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Finding the Fourth Proportional to 8,640.32, 12,963.11 and 4,483.31

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Solution

The fourth proportional to 8,640.32, 12,963.11 and 4,483.31 is: 6,726.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.32 : 12,963.11 = 4,483.31 : x
  2. Step 2: Convert to fraction form
    8,640.32/12,963.11 = 4,483.31/x
  3. Step 3: Cross multiply
    8,640.32x = 12,963.11 × 4,483.31
  4. Step 4: Simplify right side
    8,640.32x = 58,117,553.46
  5. Step 5: Solve for x
    x = 58,117,553.46/8,640.32
  6. Step 6: Final answer
    x = 6,726.32

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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.