Home / 8,119.52-12,180.55-3,439.54

Finding the Fourth Proportional to 8,119.52, 12,180.55 and 3,439.54

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Solution

The fourth proportional to 8,119.52, 12,180.55 and 3,439.54 is: 5,159.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.52 : 12,180.55 = 3,439.54 : x
  2. Step 2: Convert to fraction form
    8,119.52/12,180.55 = 3,439.54/x
  3. Step 3: Cross multiply
    8,119.52x = 12,180.55 × 3,439.54
  4. Step 4: Simplify right side
    8,119.52x = 41,895,488.95
  5. Step 5: Solve for x
    x = 41,895,488.95/8,119.52
  6. Step 6: Final answer
    x = 5,159.85

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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.