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Finding the Fourth Proportional to 2,422.68, 3,634.02 and 691.32

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Solution

The fourth proportional to 2,422.68, 3,634.02 and 691.32 is: 1,036.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.68 : 3,634.02 = 691.32 : x
  2. Step 2: Convert to fraction form
    2,422.68/3,634.02 = 691.32/x
  3. Step 3: Cross multiply
    2,422.68x = 3,634.02 × 691.32
  4. Step 4: Simplify right side
    2,422.68x = 2,512,270.71
  5. Step 5: Solve for x
    x = 2,512,270.71/2,422.68
  6. Step 6: Final answer
    x = 1,036.98

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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.