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Finding the Fourth Proportional to 3,805.37, 5,708.05 and 2,631.68

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Solution

The fourth proportional to 3,805.37, 5,708.05 and 2,631.68 is: 3,947.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.37 : 5,708.05 = 2,631.68 : x
  2. Step 2: Convert to fraction form
    3,805.37/5,708.05 = 2,631.68/x
  3. Step 3: Cross multiply
    3,805.37x = 5,708.05 × 2,631.68
  4. Step 4: Simplify right side
    3,805.37x = 15,021,761.02
  5. Step 5: Solve for x
    x = 15,021,761.02/3,805.37
  6. Step 6: Final answer
    x = 3,947.52

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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.