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Finding the Fourth Proportional to 8,447.86, 12,659.95 and 4,000.82

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Solution

The fourth proportional to 8,447.86, 12,659.95 and 4,000.82 is: 5,995.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,447.86 : 12,659.95 = 4,000.82 : x
  2. Step 2: Convert to fraction form
    8,447.86/12,659.95 = 4,000.82/x
  3. Step 3: Cross multiply
    8,447.86x = 12,659.95 × 4,000.82
  4. Step 4: Simplify right side
    8,447.86x = 50,650,181.16
  5. Step 5: Solve for x
    x = 50,650,181.16/8,447.86
  6. Step 6: Final answer
    x = 5,995.62

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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.