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Finding the Fourth Proportional to 8,447.37, 12,664.17 and 3,520.68

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Solution

The fourth proportional to 8,447.37, 12,664.17 and 3,520.68 is: 5,278.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,447.37 : 12,664.17 = 3,520.68 : x
  2. Step 2: Convert to fraction form
    8,447.37/12,664.17 = 3,520.68/x
  3. Step 3: Cross multiply
    8,447.37x = 12,664.17 × 3,520.68
  4. Step 4: Simplify right side
    8,447.37x = 44,586,490.04
  5. Step 5: Solve for x
    x = 44,586,490.04/8,447.37
  6. Step 6: Final answer
    x = 5,278.15

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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.