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Finding the Fourth Proportional to 8,408.75, 12,613.52 and 3,723.71

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Solution

The fourth proportional to 8,408.75, 12,613.52 and 3,723.71 is: 5,585.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.75 : 12,613.52 = 3,723.71 : x
  2. Step 2: Convert to fraction form
    8,408.75/12,613.52 = 3,723.71/x
  3. Step 3: Cross multiply
    8,408.75x = 12,613.52 × 3,723.71
  4. Step 4: Simplify right side
    8,408.75x = 46,969,036.80
  5. Step 5: Solve for x
    x = 46,969,036.80/8,408.75
  6. Step 6: Final answer
    x = 5,585.74

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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.