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Finding the Fourth Proportional to 8,579.72, 12,862.02 and 5,651.84

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Solution

The fourth proportional to 8,579.72, 12,862.02 and 5,651.84 is: 8,472.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.72 : 12,862.02 = 5,651.84 : x
  2. Step 2: Convert to fraction form
    8,579.72/12,862.02 = 5,651.84/x
  3. Step 3: Cross multiply
    8,579.72x = 12,862.02 × 5,651.84
  4. Step 4: Simplify right side
    8,579.72x = 72,694,079.12
  5. Step 5: Solve for x
    x = 72,694,079.12/8,579.72
  6. Step 6: Final answer
    x = 8,472.78

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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.