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Finding the Fourth Proportional to 2,551.38, 3,827.26 and 992.66

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Solution

The fourth proportional to 2,551.38, 3,827.26 and 992.66 is: 1,489.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,551.38 : 3,827.26 = 992.66 : x
  2. Step 2: Convert to fraction form
    2,551.38/3,827.26 = 992.66/x
  3. Step 3: Cross multiply
    2,551.38x = 3,827.26 × 992.66
  4. Step 4: Simplify right side
    2,551.38x = 3,799,167.91
  5. Step 5: Solve for x
    x = 3,799,167.91/2,551.38
  6. Step 6: Final answer
    x = 1,489.06

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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.