Home / 3,904.12-5,387.40-2,331.88

Finding the Fourth Proportional to 3,904.12, 5,387.40 and 2,331.88

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Solution

The fourth proportional to 3,904.12, 5,387.40 and 2,331.88 is: 3,217.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.12 : 5,387.40 = 2,331.88 : x
  2. Step 2: Convert to fraction form
    3,904.12/5,387.40 = 2,331.88/x
  3. Step 3: Cross multiply
    3,904.12x = 5,387.40 × 2,331.88
  4. Step 4: Simplify right side
    3,904.12x = 12,562,770.31
  5. Step 5: Solve for x
    x = 12,562,770.31/3,904.12
  6. Step 6: Final answer
    x = 3,217.82

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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.