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Finding the Fourth Proportional to 8,408.59, 12,612.85 and 2,565.18

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Solution

The fourth proportional to 8,408.59, 12,612.85 and 2,565.18 is: 3,847.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.59 : 12,612.85 = 2,565.18 : x
  2. Step 2: Convert to fraction form
    8,408.59/12,612.85 = 2,565.18/x
  3. Step 3: Cross multiply
    8,408.59x = 12,612.85 × 2,565.18
  4. Step 4: Simplify right side
    8,408.59x = 32,354,230.56
  5. Step 5: Solve for x
    x = 32,354,230.56/8,408.59
  6. Step 6: Final answer
    x = 3,847.76

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Double scale
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Similar ratio
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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.