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Finding the Fourth Proportional to 5,375, 8,062.50 and 1,912.26

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Solution

The fourth proportional to 5,375, 8,062.50 and 1,912.26 is: 2,868.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,375 : 8,062.50 = 1,912.26 : x
  2. Step 2: Convert to fraction form
    5,375/8,062.50 = 1,912.26/x
  3. Step 3: Cross multiply
    5,375x = 8,062.50 × 1,912.26
  4. Step 4: Simplify right side
    5,375x = 15,417,596.25
  5. Step 5: Solve for x
    x = 15,417,596.25/5,375
  6. Step 6: Final answer
    x = 2,868.39

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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.