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Finding the Fourth Proportional to 3,291.98, 4,544.17 and 1,965.20

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Solution

The fourth proportional to 3,291.98, 4,544.17 and 1,965.20 is: 2,712.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.98 : 4,544.17 = 1,965.20 : x
  2. Step 2: Convert to fraction form
    3,291.98/4,544.17 = 1,965.20/x
  3. Step 3: Cross multiply
    3,291.98x = 4,544.17 × 1,965.20
  4. Step 4: Simplify right side
    3,291.98x = 8,930,175.25
  5. Step 5: Solve for x
    x = 8,930,175.25/3,291.98
  6. Step 6: Final answer
    x = 2,712.71

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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.