Home / 2,422.91-3,634.29-691.54

Finding the Fourth Proportional to 2,422.91, 3,634.29 and 691.54

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Solution

The fourth proportional to 2,422.91, 3,634.29 and 691.54 is: 1,037.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.91 : 3,634.29 = 691.54 : x
  2. Step 2: Convert to fraction form
    2,422.91/3,634.29 = 691.54/x
  3. Step 3: Cross multiply
    2,422.91x = 3,634.29 × 691.54
  4. Step 4: Simplify right side
    2,422.91x = 2,513,247.82
  5. Step 5: Solve for x
    x = 2,513,247.82/2,422.91
  6. Step 6: Final answer
    x = 1,037.28

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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.