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Finding the Fourth Proportional to 1,999.98, 3,001.77 and 1,672.97

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Solution

The fourth proportional to 1,999.98, 3,001.77 and 1,672.97 is: 2,510.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.98 : 3,001.77 = 1,672.97 : x
  2. Step 2: Convert to fraction form
    1,999.98/3,001.77 = 1,672.97/x
  3. Step 3: Cross multiply
    1,999.98x = 3,001.77 × 1,672.97
  4. Step 4: Simplify right side
    1,999.98x = 5,021,856.15
  5. Step 5: Solve for x
    x = 5,021,856.15/1,999.98
  6. Step 6: Final answer
    x = 2,510.95

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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.