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Finding the Fourth Proportional to 5,479.14, 8,218.72 and 1,375.14

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Solution

The fourth proportional to 5,479.14, 8,218.72 and 1,375.14 is: 2,062.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.14 : 8,218.72 = 1,375.14 : x
  2. Step 2: Convert to fraction form
    5,479.14/8,218.72 = 1,375.14/x
  3. Step 3: Cross multiply
    5,479.14x = 8,218.72 × 1,375.14
  4. Step 4: Simplify right side
    5,479.14x = 11,301,890.62
  5. Step 5: Solve for x
    x = 11,301,890.62/5,479.14
  6. Step 6: Final answer
    x = 2,062.71

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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.