Home / 3,991.22-5,989.58-1,394.16

Finding the Fourth Proportional to 3,991.22, 5,989.58 and 1,394.16

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Solution

The fourth proportional to 3,991.22, 5,989.58 and 1,394.16 is: 2,092.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.22 : 5,989.58 = 1,394.16 : x
  2. Step 2: Convert to fraction form
    3,991.22/5,989.58 = 1,394.16/x
  3. Step 3: Cross multiply
    3,991.22x = 5,989.58 × 1,394.16
  4. Step 4: Simplify right side
    3,991.22x = 8,350,408.65
  5. Step 5: Solve for x
    x = 8,350,408.65/3,991.22
  6. Step 6: Final answer
    x = 2,092.20

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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.