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Finding the Fourth Proportional to 2,008.38, 3,012.26 and 691.92

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Solution

The fourth proportional to 2,008.38, 3,012.26 and 691.92 is: 1,037.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.38 : 3,012.26 = 691.92 : x
  2. Step 2: Convert to fraction form
    2,008.38/3,012.26 = 691.92/x
  3. Step 3: Cross multiply
    2,008.38x = 3,012.26 × 691.92
  4. Step 4: Simplify right side
    2,008.38x = 2,084,239.48
  5. Step 5: Solve for x
    x = 2,084,239.48/2,008.38
  6. Step 6: Final answer
    x = 1,037.77

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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.