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Finding the Fourth Proportional to 8,333.86, 12,489.69 and 4,110.66

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Solution

The fourth proportional to 8,333.86, 12,489.69 and 4,110.66 is: 6,160.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,333.86 : 12,489.69 = 4,110.66 : x
  2. Step 2: Convert to fraction form
    8,333.86/12,489.69 = 4,110.66/x
  3. Step 3: Cross multiply
    8,333.86x = 12,489.69 × 4,110.66
  4. Step 4: Simplify right side
    8,333.86x = 51,340,869.10
  5. Step 5: Solve for x
    x = 51,340,869.10/8,333.86
  6. Step 6: Final answer
    x = 6,160.51

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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.