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Finding the Fourth Proportional to 3,375.68, 5,065.13 and 1,296.71

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Solution

The fourth proportional to 3,375.68, 5,065.13 and 1,296.71 is: 1,945.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375.68 : 5,065.13 = 1,296.71 : x
  2. Step 2: Convert to fraction form
    3,375.68/5,065.13 = 1,296.71/x
  3. Step 3: Cross multiply
    3,375.68x = 5,065.13 × 1,296.71
  4. Step 4: Simplify right side
    3,375.68x = 6,568,001.63
  5. Step 5: Solve for x
    x = 6,568,001.63/3,375.68
  6. Step 6: Final answer
    x = 1,945.69

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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.