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Finding the Fourth Proportional to 3,991.85, 5,988.98 and 1,799.99

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Solution

The fourth proportional to 3,991.85, 5,988.98 and 1,799.99 is: 2,700.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.85 : 5,988.98 = 1,799.99 : x
  2. Step 2: Convert to fraction form
    3,991.85/5,988.98 = 1,799.99/x
  3. Step 3: Cross multiply
    3,991.85x = 5,988.98 × 1,799.99
  4. Step 4: Simplify right side
    3,991.85x = 10,780,104.11
  5. Step 5: Solve for x
    x = 10,780,104.11/3,991.85
  6. Step 6: Final answer
    x = 2,700.53

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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.