Home / 8,119.11-12,176.19-4,221.39

Finding the Fourth Proportional to 8,119.11, 12,176.19 and 4,221.39

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Solution

The fourth proportional to 8,119.11, 12,176.19 and 4,221.39 is: 6,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.11 : 12,176.19 = 4,221.39 : x
  2. Step 2: Convert to fraction form
    8,119.11/12,176.19 = 4,221.39/x
  3. Step 3: Cross multiply
    8,119.11x = 12,176.19 × 4,221.39
  4. Step 4: Simplify right side
    8,119.11x = 51,400,446.70
  5. Step 5: Solve for x
    x = 51,400,446.70/8,119.11
  6. Step 6: Final answer
    x = 6,330.80

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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.