Home / 8,212.20-11,329.38-5,414.12

Finding the Fourth Proportional to 8,212.20, 11,329.38 and 5,414.12

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Solution

The fourth proportional to 8,212.20, 11,329.38 and 5,414.12 is: 7,469.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.20 : 11,329.38 = 5,414.12 : x
  2. Step 2: Convert to fraction form
    8,212.20/11,329.38 = 5,414.12/x
  3. Step 3: Cross multiply
    8,212.20x = 11,329.38 × 5,414.12
  4. Step 4: Simplify right side
    8,212.20x = 61,338,622.85
  5. Step 5: Solve for x
    x = 61,338,622.85/8,212.20
  6. Step 6: Final answer
    x = 7,469.21

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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.