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Finding the Fourth Proportional to 8,640.32, 12,943.52 and 4,483.04

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Solution

The fourth proportional to 8,640.32, 12,943.52 and 4,483.04 is: 6,715.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.32 : 12,943.52 = 4,483.04 : x
  2. Step 2: Convert to fraction form
    8,640.32/12,943.52 = 4,483.04/x
  3. Step 3: Cross multiply
    8,640.32x = 12,943.52 × 4,483.04
  4. Step 4: Simplify right side
    8,640.32x = 58,026,317.90
  5. Step 5: Solve for x
    x = 58,026,317.90/8,640.32
  6. Step 6: Final answer
    x = 6,715.76

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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.