Home / 3,977.72-5,489.16-2,209.04

Finding the Fourth Proportional to 3,977.72, 5,489.16 and 2,209.04

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Solution

The fourth proportional to 3,977.72, 5,489.16 and 2,209.04 is: 3,048.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.72 : 5,489.16 = 2,209.04 : x
  2. Step 2: Convert to fraction form
    3,977.72/5,489.16 = 2,209.04/x
  3. Step 3: Cross multiply
    3,977.72x = 5,489.16 × 2,209.04
  4. Step 4: Simplify right side
    3,977.72x = 12,125,774.01
  5. Step 5: Solve for x
    x = 12,125,774.01/3,977.72
  6. Step 6: Final answer
    x = 3,048.42

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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.