Home / 7,138.20-9,850.84-4,153.97

Finding the Fourth Proportional to 7,138.20, 9,850.84 and 4,153.97

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Solution

The fourth proportional to 7,138.20, 9,850.84 and 4,153.97 is: 5,732.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.20 : 9,850.84 = 4,153.97 : x
  2. Step 2: Convert to fraction form
    7,138.20/9,850.84 = 4,153.97/x
  3. Step 3: Cross multiply
    7,138.20x = 9,850.84 × 4,153.97
  4. Step 4: Simplify right side
    7,138.20x = 40,920,105.91
  5. Step 5: Solve for x
    x = 40,920,105.91/7,138.20
  6. Step 6: Final answer
    x = 5,732.55

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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.