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Finding the Fourth Proportional to 6,781.80, 10,169.10 and 2,399.40

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Solution

The fourth proportional to 6,781.80, 10,169.10 and 2,399.40 is: 3,597.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.80 : 10,169.10 = 2,399.40 : x
  2. Step 2: Convert to fraction form
    6,781.80/10,169.10 = 2,399.40/x
  3. Step 3: Cross multiply
    6,781.80x = 10,169.10 × 2,399.40
  4. Step 4: Simplify right side
    6,781.80x = 24,399,738.54
  5. Step 5: Solve for x
    x = 24,399,738.54/6,781.80
  6. Step 6: Final answer
    x = 3,597.83

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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.