Home / 3,701.10-5,107.22-2,128.90

Finding the Fourth Proportional to 3,701.10, 5,107.22 and 2,128.90

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Solution

The fourth proportional to 3,701.10, 5,107.22 and 2,128.90 is: 2,937.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,701.10 : 5,107.22 = 2,128.90 : x
  2. Step 2: Convert to fraction form
    3,701.10/5,107.22 = 2,128.90/x
  3. Step 3: Cross multiply
    3,701.10x = 5,107.22 × 2,128.90
  4. Step 4: Simplify right side
    3,701.10x = 10,872,760.66
  5. Step 5: Solve for x
    x = 10,872,760.66/3,701.10
  6. Step 6: Final answer
    x = 2,937.71

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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.