Home / 3,749.22-5,174.15-2,687.31

Finding the Fourth Proportional to 3,749.22, 5,174.15 and 2,687.31

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Solution

The fourth proportional to 3,749.22, 5,174.15 and 2,687.31 is: 3,708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.22 : 5,174.15 = 2,687.31 : x
  2. Step 2: Convert to fraction form
    3,749.22/5,174.15 = 2,687.31/x
  3. Step 3: Cross multiply
    3,749.22x = 5,174.15 × 2,687.31
  4. Step 4: Simplify right side
    3,749.22x = 13,904,531.60
  5. Step 5: Solve for x
    x = 13,904,531.60/3,749.22
  6. Step 6: Final answer
    x = 3,708.65

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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.