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Finding the Fourth Proportional to 8,178.20, 12,267 and 2,334.80

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Solution

The fourth proportional to 8,178.20, 12,267 and 2,334.80 is: 3,502.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.20 : 12,267 = 2,334.80 : x
  2. Step 2: Convert to fraction form
    8,178.20/12,267 = 2,334.80/x
  3. Step 3: Cross multiply
    8,178.20x = 12,267 × 2,334.80
  4. Step 4: Simplify right side
    8,178.20x = 28,640,991.60
  5. Step 5: Solve for x
    x = 28,640,991.60/8,178.20
  6. Step 6: Final answer
    x = 3,502.11

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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.