Home / 2,131.15-3,197.25-725.56

Finding the Fourth Proportional to 2,131.15, 3,197.25 and 725.56

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Solution

The fourth proportional to 2,131.15, 3,197.25 and 725.56 is: 1,088.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.15 : 3,197.25 = 725.56 : x
  2. Step 2: Convert to fraction form
    2,131.15/3,197.25 = 725.56/x
  3. Step 3: Cross multiply
    2,131.15x = 3,197.25 × 725.56
  4. Step 4: Simplify right side
    2,131.15x = 2,319,786.90
  5. Step 5: Solve for x
    x = 2,319,786.90/2,131.15
  6. Step 6: Final answer
    x = 1,088.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.