Home / 1,456.18-2,182.75-762.11

Finding the Fourth Proportional to 1,456.18, 2,182.75 and 762.11

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Solution

The fourth proportional to 1,456.18, 2,182.75 and 762.11 is: 1,142.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,456.18 : 2,182.75 = 762.11 : x
  2. Step 2: Convert to fraction form
    1,456.18/2,182.75 = 762.11/x
  3. Step 3: Cross multiply
    1,456.18x = 2,182.75 × 762.11
  4. Step 4: Simplify right side
    1,456.18x = 1,663,490.97
  5. Step 5: Solve for x
    x = 1,663,490.97/1,456.18
  6. Step 6: Final answer
    x = 1,142.37

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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.