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Finding the Fourth Proportional to 3,990.33, 5,986.98 and 1,799.06

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Solution

The fourth proportional to 3,990.33, 5,986.98 and 1,799.06 is: 2,699.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.33 : 5,986.98 = 1,799.06 : x
  2. Step 2: Convert to fraction form
    3,990.33/5,986.98 = 1,799.06/x
  3. Step 3: Cross multiply
    3,990.33x = 5,986.98 × 1,799.06
  4. Step 4: Simplify right side
    3,990.33x = 10,770,906.30
  5. Step 5: Solve for x
    x = 10,770,906.30/3,990.33
  6. Step 6: Final answer
    x = 2,699.25

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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.