Home / 2,170.82-3,251.02-1,243.56

Finding the Fourth Proportional to 2,170.82, 3,251.02 and 1,243.56

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Solution

The fourth proportional to 2,170.82, 3,251.02 and 1,243.56 is: 1,862.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.82 : 3,251.02 = 1,243.56 : x
  2. Step 2: Convert to fraction form
    2,170.82/3,251.02 = 1,243.56/x
  3. Step 3: Cross multiply
    2,170.82x = 3,251.02 × 1,243.56
  4. Step 4: Simplify right side
    2,170.82x = 4,042,838.43
  5. Step 5: Solve for x
    x = 4,042,838.43/2,170.82
  6. Step 6: Final answer
    x = 1,862.36

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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.