Home / 6,131.92-9,198.12-1,971.86

Finding the Fourth Proportional to 6,131.92, 9,198.12 and 1,971.86

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Solution

The fourth proportional to 6,131.92, 9,198.12 and 1,971.86 is: 2,957.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,131.92 : 9,198.12 = 1,971.86 : x
  2. Step 2: Convert to fraction form
    6,131.92/9,198.12 = 1,971.86/x
  3. Step 3: Cross multiply
    6,131.92x = 9,198.12 × 1,971.86
  4. Step 4: Simplify right side
    6,131.92x = 18,137,404.90
  5. Step 5: Solve for x
    x = 18,137,404.90/6,131.92
  6. Step 6: Final answer
    x = 2,957.87

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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.