Home / 3,991.15-5,989.46-1,394.09

Finding the Fourth Proportional to 3,991.15, 5,989.46 and 1,394.09

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Solution

The fourth proportional to 3,991.15, 5,989.46 and 1,394.09 is: 2,092.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.15 : 5,989.46 = 1,394.09 : x
  2. Step 2: Convert to fraction form
    3,991.15/5,989.46 = 1,394.09/x
  3. Step 3: Cross multiply
    3,991.15x = 5,989.46 × 1,394.09
  4. Step 4: Simplify right side
    3,991.15x = 8,349,809.37
  5. Step 5: Solve for x
    x = 8,349,809.37/3,991.15
  6. Step 6: Final answer
    x = 2,092.08

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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.