Home / 8,251.20-12,379.68-2,408.16

Finding the Fourth Proportional to 8,251.20, 12,379.68 and 2,408.16

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Solution

The fourth proportional to 8,251.20, 12,379.68 and 2,408.16 is: 3,613.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,251.20 : 12,379.68 = 2,408.16 : x
  2. Step 2: Convert to fraction form
    8,251.20/12,379.68 = 2,408.16/x
  3. Step 3: Cross multiply
    8,251.20x = 12,379.68 × 2,408.16
  4. Step 4: Simplify right side
    8,251.20x = 29,812,250.19
  5. Step 5: Solve for x
    x = 29,812,250.19/8,251.20
  6. Step 6: Final answer
    x = 3,613.08

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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.