Home / 8,408.83-12,613.97-2,168.78

Finding the Fourth Proportional to 8,408.83, 12,613.97 and 2,168.78

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Solution

The fourth proportional to 8,408.83, 12,613.97 and 2,168.78 is: 3,253.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.83 : 12,613.97 = 2,168.78 : x
  2. Step 2: Convert to fraction form
    8,408.83/12,613.97 = 2,168.78/x
  3. Step 3: Cross multiply
    8,408.83x = 12,613.97 × 2,168.78
  4. Step 4: Simplify right side
    8,408.83x = 27,356,946.55
  5. Step 5: Solve for x
    x = 27,356,946.55/8,408.83
  6. Step 6: Final answer
    x = 3,253.36

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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.