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Finding the Fourth Proportional to 8,073.20, 12,109.80 and 4,136.60

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Solution

The fourth proportional to 8,073.20, 12,109.80 and 4,136.60 is: 6,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,073.20 : 12,109.80 = 4,136.60 : x
  2. Step 2: Convert to fraction form
    8,073.20/12,109.80 = 4,136.60/x
  3. Step 3: Cross multiply
    8,073.20x = 12,109.80 × 4,136.60
  4. Step 4: Simplify right side
    8,073.20x = 50,093,398.68
  5. Step 5: Solve for x
    x = 50,093,398.68/8,073.20
  6. Step 6: Final answer
    x = 6,204.90

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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.