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Finding the Fourth Proportional to 3,806, 5,252.28 and 2,150

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Solution

The fourth proportional to 3,806, 5,252.28 and 2,150 is: 2,967

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,806 : 5,252.28 = 2,150 : x
  2. Step 2: Convert to fraction form
    3,806/5,252.28 = 2,150/x
  3. Step 3: Cross multiply
    3,806x = 5,252.28 × 2,150
  4. Step 4: Simplify right side
    3,806x = 11,292,402
  5. Step 5: Solve for x
    x = 11,292,402/3,806
  6. Step 6: Final answer
    x = 2,967

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.