Home / 3,910.78-5,396.88-2,338.88

Finding the Fourth Proportional to 3,910.78, 5,396.88 and 2,338.88

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Solution

The fourth proportional to 3,910.78, 5,396.88 and 2,338.88 is: 3,227.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.78 : 5,396.88 = 2,338.88 : x
  2. Step 2: Convert to fraction form
    3,910.78/5,396.88 = 2,338.88/x
  3. Step 3: Cross multiply
    3,910.78x = 5,396.88 × 2,338.88
  4. Step 4: Simplify right side
    3,910.78x = 12,622,623.32
  5. Step 5: Solve for x
    x = 12,622,623.32/3,910.78
  6. Step 6: Final answer
    x = 3,227.65

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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.