Home / 3,639.20-5,022.41-2,147.58

Finding the Fourth Proportional to 3,639.20, 5,022.41 and 2,147.58

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Solution

The fourth proportional to 3,639.20, 5,022.41 and 2,147.58 is: 2,963.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.20 : 5,022.41 = 2,147.58 : x
  2. Step 2: Convert to fraction form
    3,639.20/5,022.41 = 2,147.58/x
  3. Step 3: Cross multiply
    3,639.20x = 5,022.41 × 2,147.58
  4. Step 4: Simplify right side
    3,639.20x = 10,786,016.53
  5. Step 5: Solve for x
    x = 10,786,016.53/3,639.20
  6. Step 6: Final answer
    x = 2,963.85

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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.