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Finding the Fourth Proportional to 3,251.39, 4,876.26 and 910.79

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Solution

The fourth proportional to 3,251.39, 4,876.26 and 910.79 is: 1,365.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.39 : 4,876.26 = 910.79 : x
  2. Step 2: Convert to fraction form
    3,251.39/4,876.26 = 910.79/x
  3. Step 3: Cross multiply
    3,251.39x = 4,876.26 × 910.79
  4. Step 4: Simplify right side
    3,251.39x = 4,441,273.17
  5. Step 5: Solve for x
    x = 4,441,273.17/3,251.39
  6. Step 6: Final answer
    x = 1,365.96

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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.