Home / 3,947.91-5,448.12-2,179.52

Finding the Fourth Proportional to 3,947.91, 5,448.12 and 2,179.52

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Solution

The fourth proportional to 3,947.91, 5,448.12 and 2,179.52 is: 3,007.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.91 : 5,448.12 = 2,179.52 : x
  2. Step 2: Convert to fraction form
    3,947.91/5,448.12 = 2,179.52/x
  3. Step 3: Cross multiply
    3,947.91x = 5,448.12 × 2,179.52
  4. Step 4: Simplify right side
    3,947.91x = 11,874,286.50
  5. Step 5: Solve for x
    x = 11,874,286.50/3,947.91
  6. Step 6: Final answer
    x = 3,007.74

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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.