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Finding the Fourth Proportional to 8,234.80, 11,363.78 and 4,649.90

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Solution

The fourth proportional to 8,234.80, 11,363.78 and 4,649.90 is: 6,416.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,234.80 : 11,363.78 = 4,649.90 : x
  2. Step 2: Convert to fraction form
    8,234.80/11,363.78 = 4,649.90/x
  3. Step 3: Cross multiply
    8,234.80x = 11,363.78 × 4,649.90
  4. Step 4: Simplify right side
    8,234.80x = 52,840,395.43
  5. Step 5: Solve for x
    x = 52,840,395.43/8,234.80
  6. Step 6: Final answer
    x = 6,416.72

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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.