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Finding the Fourth Proportional to 1,999.02, 2,997.03 and 1,380.96

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Solution

The fourth proportional to 1,999.02, 2,997.03 and 1,380.96 is: 2,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.02 : 2,997.03 = 1,380.96 : x
  2. Step 2: Convert to fraction form
    1,999.02/2,997.03 = 1,380.96/x
  3. Step 3: Cross multiply
    1,999.02x = 2,997.03 × 1,380.96
  4. Step 4: Simplify right side
    1,999.02x = 4,138,778.55
  5. Step 5: Solve for x
    x = 4,138,778.55/1,999.02
  6. Step 6: Final answer
    x = 2,070.40

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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.