Home / 3,947.97-5,448.53-2,179.92

Finding the Fourth Proportional to 3,947.97, 5,448.53 and 2,179.92

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Solution

The fourth proportional to 3,947.97, 5,448.53 and 2,179.92 is: 3,008.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.97 : 5,448.53 = 2,179.92 : x
  2. Step 2: Convert to fraction form
    3,947.97/5,448.53 = 2,179.92/x
  3. Step 3: Cross multiply
    3,947.97x = 5,448.53 × 2,179.92
  4. Step 4: Simplify right side
    3,947.97x = 11,877,348.62
  5. Step 5: Solve for x
    x = 11,877,348.62/3,947.97
  6. Step 6: Final answer
    x = 3,008.47

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1.5x scale

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.