Home / 2,125.16-3,186.66-1,028.72

Finding the Fourth Proportional to 2,125.16, 3,186.66 and 1,028.72

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Solution

The fourth proportional to 2,125.16, 3,186.66 and 1,028.72 is: 1,542.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.16 : 3,186.66 = 1,028.72 : x
  2. Step 2: Convert to fraction form
    2,125.16/3,186.66 = 1,028.72/x
  3. Step 3: Cross multiply
    2,125.16x = 3,186.66 × 1,028.72
  4. Step 4: Simplify right side
    2,125.16x = 3,278,180.88
  5. Step 5: Solve for x
    x = 3,278,180.88/2,125.16
  6. Step 6: Final answer
    x = 1,542.56

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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.