Home / 3,979.14-5,493.18-2,487.88

Finding the Fourth Proportional to 3,979.14, 5,493.18 and 2,487.88

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Solution

The fourth proportional to 3,979.14, 5,493.18 and 2,487.88 is: 3,434.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.14 : 5,493.18 = 2,487.88 : x
  2. Step 2: Convert to fraction form
    3,979.14/5,493.18 = 2,487.88/x
  3. Step 3: Cross multiply
    3,979.14x = 5,493.18 × 2,487.88
  4. Step 4: Simplify right side
    3,979.14x = 13,666,372.66
  5. Step 5: Solve for x
    x = 13,666,372.66/3,979.14
  6. Step 6: Final answer
    x = 3,434.50

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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.