Home / 8,125.38-12,180.80-3,198.42

Finding the Fourth Proportional to 8,125.38, 12,180.80 and 3,198.42

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Solution

The fourth proportional to 8,125.38, 12,180.80 and 3,198.42 is: 4,794.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.38 : 12,180.80 = 3,198.42 : x
  2. Step 2: Convert to fraction form
    8,125.38/12,180.80 = 3,198.42/x
  3. Step 3: Cross multiply
    8,125.38x = 12,180.80 × 3,198.42
  4. Step 4: Simplify right side
    8,125.38x = 38,959,314.34
  5. Step 5: Solve for x
    x = 38,959,314.34/8,125.38
  6. Step 6: Final answer
    x = 4,794.77

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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.