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Finding the Fourth Proportional to 2,997.72, 4,489.62 and 2,893.90

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Solution

The fourth proportional to 2,997.72, 4,489.62 and 2,893.90 is: 4,334.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,997.72 : 4,489.62 = 2,893.90 : x
  2. Step 2: Convert to fraction form
    2,997.72/4,489.62 = 2,893.90/x
  3. Step 3: Cross multiply
    2,997.72x = 4,489.62 × 2,893.90
  4. Step 4: Simplify right side
    2,997.72x = 12,992,511.32
  5. Step 5: Solve for x
    x = 12,992,511.32/2,997.72
  6. Step 6: Final answer
    x = 4,334.13

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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.