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Finding the Fourth Proportional to 8,691.18, 13,027.05 and 5,230.86

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Solution

The fourth proportional to 8,691.18, 13,027.05 and 5,230.86 is: 7,840.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.18 : 13,027.05 = 5,230.86 : x
  2. Step 2: Convert to fraction form
    8,691.18/13,027.05 = 5,230.86/x
  3. Step 3: Cross multiply
    8,691.18x = 13,027.05 × 5,230.86
  4. Step 4: Simplify right side
    8,691.18x = 68,142,674.76
  5. Step 5: Solve for x
    x = 68,142,674.76/8,691.18
  6. Step 6: Final answer
    x = 7,840.44

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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.