Home / 3,638.38-5,021.16-2,147.17

Finding the Fourth Proportional to 3,638.38, 5,021.16 and 2,147.17

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Solution

The fourth proportional to 3,638.38, 5,021.16 and 2,147.17 is: 2,963.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.38 : 5,021.16 = 2,147.17 : x
  2. Step 2: Convert to fraction form
    3,638.38/5,021.16 = 2,147.17/x
  3. Step 3: Cross multiply
    3,638.38x = 5,021.16 × 2,147.17
  4. Step 4: Simplify right side
    3,638.38x = 10,781,284.12
  5. Step 5: Solve for x
    x = 10,781,284.12/3,638.38
  6. Step 6: Final answer
    x = 2,963.21

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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.