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Finding the Fourth Proportional to 4,915.38, 7,373 and 1,992.98

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Solution

The fourth proportional to 4,915.38, 7,373 and 1,992.98 is: 2,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.38 : 7,373 = 1,992.98 : x
  2. Step 2: Convert to fraction form
    4,915.38/7,373 = 1,992.98/x
  3. Step 3: Cross multiply
    4,915.38x = 7,373 × 1,992.98
  4. Step 4: Simplify right side
    4,915.38x = 14,694,241.54
  5. Step 5: Solve for x
    x = 14,694,241.54/4,915.38
  6. Step 6: Final answer
    x = 2,989.44

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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.