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Finding the Fourth Proportional to 8,408.85, 12,613.32 and 2,863.44

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Solution

The fourth proportional to 8,408.85, 12,613.32 and 2,863.44 is: 4,295.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.85 : 12,613.32 = 2,863.44 : x
  2. Step 2: Convert to fraction form
    8,408.85/12,613.32 = 2,863.44/x
  3. Step 3: Cross multiply
    8,408.85x = 12,613.32 × 2,863.44
  4. Step 4: Simplify right side
    8,408.85x = 36,117,485.02
  5. Step 5: Solve for x
    x = 36,117,485.02/8,408.85
  6. Step 6: Final answer
    x = 4,295.18

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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.