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Finding the Fourth Proportional to 8,118.66, 12,169.22 and 3,961.46

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Solution

The fourth proportional to 8,118.66, 12,169.22 and 3,961.46 is: 5,937.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.66 : 12,169.22 = 3,961.46 : x
  2. Step 2: Convert to fraction form
    8,118.66/12,169.22 = 3,961.46/x
  3. Step 3: Cross multiply
    8,118.66x = 12,169.22 × 3,961.46
  4. Step 4: Simplify right side
    8,118.66x = 48,207,878.26
  5. Step 5: Solve for x
    x = 48,207,878.26/8,118.66
  6. Step 6: Final answer
    x = 5,937.91

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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.