Home / 3,638.52-5,019.30-2,379.78

Finding the Fourth Proportional to 3,638.52, 5,019.30 and 2,379.78

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Solution

The fourth proportional to 3,638.52, 5,019.30 and 2,379.78 is: 3,282.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.52 : 5,019.30 = 2,379.78 : x
  2. Step 2: Convert to fraction form
    3,638.52/5,019.30 = 2,379.78/x
  3. Step 3: Cross multiply
    3,638.52x = 5,019.30 × 2,379.78
  4. Step 4: Simplify right side
    3,638.52x = 11,944,829.75
  5. Step 5: Solve for x
    x = 11,944,829.75/3,638.52
  6. Step 6: Final answer
    x = 3,282.88

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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.