Home / 3,721.28-5,134.44-2,149.36

Finding the Fourth Proportional to 3,721.28, 5,134.44 and 2,149.36

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Solution

The fourth proportional to 3,721.28, 5,134.44 and 2,149.36 is: 2,965.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.28 : 5,134.44 = 2,149.36 : x
  2. Step 2: Convert to fraction form
    3,721.28/5,134.44 = 2,149.36/x
  3. Step 3: Cross multiply
    3,721.28x = 5,134.44 × 2,149.36
  4. Step 4: Simplify right side
    3,721.28x = 11,035,759.96
  5. Step 5: Solve for x
    x = 11,035,759.96/3,721.28
  6. Step 6: Final answer
    x = 2,965.58

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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.