Home / 8,122.42-11,198.87-6,711.80

Finding the Fourth Proportional to 8,122.42, 11,198.87 and 6,711.80

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Solution

The fourth proportional to 8,122.42, 11,198.87 and 6,711.80 is: 9,253.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.42 : 11,198.87 = 6,711.80 : x
  2. Step 2: Convert to fraction form
    8,122.42/11,198.87 = 6,711.80/x
  3. Step 3: Cross multiply
    8,122.42x = 11,198.87 × 6,711.80
  4. Step 4: Simplify right side
    8,122.42x = 75,164,542.11
  5. Step 5: Solve for x
    x = 75,164,542.11/8,122.42
  6. Step 6: Final answer
    x = 9,253.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.