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Finding the Fourth Proportional to 8,579.92, 12,871.52 and 3,649.56

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Solution

The fourth proportional to 8,579.92, 12,871.52 and 3,649.56 is: 5,475.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.92 : 12,871.52 = 3,649.56 : x
  2. Step 2: Convert to fraction form
    8,579.92/12,871.52 = 3,649.56/x
  3. Step 3: Cross multiply
    8,579.92x = 12,871.52 × 3,649.56
  4. Step 4: Simplify right side
    8,579.92x = 46,975,384.53
  5. Step 5: Solve for x
    x = 46,975,384.53/8,579.92
  6. Step 6: Final answer
    x = 5,475.04

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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.