Home / 8,129.43-12,195.05-3,198.42

Finding the Fourth Proportional to 8,129.43, 12,195.05 and 3,198.42

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Solution

The fourth proportional to 8,129.43, 12,195.05 and 3,198.42 is: 4,797.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.43 : 12,195.05 = 3,198.42 : x
  2. Step 2: Convert to fraction form
    8,129.43/12,195.05 = 3,198.42/x
  3. Step 3: Cross multiply
    8,129.43x = 12,195.05 × 3,198.42
  4. Step 4: Simplify right side
    8,129.43x = 39,004,875.83
  5. Step 5: Solve for x
    x = 39,004,875.83/8,129.43
  6. Step 6: Final answer
    x = 4,797.98

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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.