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Finding the Fourth Proportional to 5,375.68, 8,063.52 and 1,912.96

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Solution

The fourth proportional to 5,375.68, 8,063.52 and 1,912.96 is: 2,869.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,375.68 : 8,063.52 = 1,912.96 : x
  2. Step 2: Convert to fraction form
    5,375.68/8,063.52 = 1,912.96/x
  3. Step 3: Cross multiply
    5,375.68x = 8,063.52 × 1,912.96
  4. Step 4: Simplify right side
    5,375.68x = 15,425,191.22
  5. Step 5: Solve for x
    x = 15,425,191.22/5,375.68
  6. Step 6: Final answer
    x = 2,869.44

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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.