Home / 3,911.62-5,397.87-2,340.58

Finding the Fourth Proportional to 3,911.62, 5,397.87 and 2,340.58

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Solution

The fourth proportional to 3,911.62, 5,397.87 and 2,340.58 is: 3,229.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.62 : 5,397.87 = 2,340.58 : x
  2. Step 2: Convert to fraction form
    3,911.62/5,397.87 = 2,340.58/x
  3. Step 3: Cross multiply
    3,911.62x = 5,397.87 × 2,340.58
  4. Step 4: Simplify right side
    3,911.62x = 12,634,141.85
  5. Step 5: Solve for x
    x = 12,634,141.85/3,911.62
  6. Step 6: Final answer
    x = 3,229.90

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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.