Home / 3,947.91-5,448.06-2,179.47

Finding the Fourth Proportional to 3,947.91, 5,448.06 and 2,179.47

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Solution

The fourth proportional to 3,947.91, 5,448.06 and 2,179.47 is: 3,007.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.91 : 5,448.06 = 2,179.47 : x
  2. Step 2: Convert to fraction form
    3,947.91/5,448.06 = 2,179.47/x
  3. Step 3: Cross multiply
    3,947.91x = 5,448.06 × 2,179.47
  4. Step 4: Simplify right side
    3,947.91x = 11,873,883.33
  5. Step 5: Solve for x
    x = 11,873,883.33/3,947.91
  6. Step 6: Final answer
    x = 3,007.64

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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.