Home / 3,977.91-5,489.55-2,209.50

Finding the Fourth Proportional to 3,977.91, 5,489.55 and 2,209.50

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Solution

The fourth proportional to 3,977.91, 5,489.55 and 2,209.50 is: 3,049.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.91 : 5,489.55 = 2,209.50 : x
  2. Step 2: Convert to fraction form
    3,977.91/5,489.55 = 2,209.50/x
  3. Step 3: Cross multiply
    3,977.91x = 5,489.55 × 2,209.50
  4. Step 4: Simplify right side
    3,977.91x = 12,129,160.73
  5. Step 5: Solve for x
    x = 12,129,160.73/3,977.91
  6. Step 6: Final answer
    x = 3,049.13

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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.