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Finding the Fourth Proportional to 8,434.86, 12,652.89 and 3,240.73

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Solution

The fourth proportional to 8,434.86, 12,652.89 and 3,240.73 is: 4,861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,434.86 : 12,652.89 = 3,240.73 : x
  2. Step 2: Convert to fraction form
    8,434.86/12,652.89 = 3,240.73/x
  3. Step 3: Cross multiply
    8,434.86x = 12,652.89 × 3,240.73
  4. Step 4: Simplify right side
    8,434.86x = 41,004,600.21
  5. Step 5: Solve for x
    x = 41,004,600.21/8,434.86
  6. Step 6: Final answer
    x = 4,861.33

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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.