Home / 3,949.12-5,449.71-2,156.61

Finding the Fourth Proportional to 3,949.12, 5,449.71 and 2,156.61

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Solution

The fourth proportional to 3,949.12, 5,449.71 and 2,156.61 is: 2,976.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.12 : 5,449.71 = 2,156.61 : x
  2. Step 2: Convert to fraction form
    3,949.12/5,449.71 = 2,156.61/x
  3. Step 3: Cross multiply
    3,949.12x = 5,449.71 × 2,156.61
  4. Step 4: Simplify right side
    3,949.12x = 11,752,899.08
  5. Step 5: Solve for x
    x = 11,752,899.08/3,949.12
  6. Step 6: Final answer
    x = 2,976.08

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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.