Home / 8,104.20-12,149.55-3,427.80

Finding the Fourth Proportional to 8,104.20, 12,149.55 and 3,427.80

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Solution

The fourth proportional to 8,104.20, 12,149.55 and 3,427.80 is: 5,138.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,104.20 : 12,149.55 = 3,427.80 : x
  2. Step 2: Convert to fraction form
    8,104.20/12,149.55 = 3,427.80/x
  3. Step 3: Cross multiply
    8,104.20x = 12,149.55 × 3,427.80
  4. Step 4: Simplify right side
    8,104.20x = 41,646,227.49
  5. Step 5: Solve for x
    x = 41,646,227.49/8,104.20
  6. Step 6: Final answer
    x = 5,138.84

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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.