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Finding the Fourth Proportional to 8,991.06, 12,401.46 and 8,247.48

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Solution

The fourth proportional to 8,991.06, 12,401.46 and 8,247.48 is: 11,375.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.06 : 12,401.46 = 8,247.48 : x
  2. Step 2: Convert to fraction form
    8,991.06/12,401.46 = 8,247.48/x
  3. Step 3: Cross multiply
    8,991.06x = 12,401.46 × 8,247.48
  4. Step 4: Simplify right side
    8,991.06x = 102,280,793.32
  5. Step 5: Solve for x
    x = 102,280,793.32/8,991.06
  6. Step 6: Final answer
    x = 11,375.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.