Home / 3,998.22-5,986.05-2,119.83

Finding the Fourth Proportional to 3,998.22, 5,986.05 and 2,119.83

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Solution

The fourth proportional to 3,998.22, 5,986.05 and 2,119.83 is: 3,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.22 : 5,986.05 = 2,119.83 : x
  2. Step 2: Convert to fraction form
    3,998.22/5,986.05 = 2,119.83/x
  3. Step 3: Cross multiply
    3,998.22x = 5,986.05 × 2,119.83
  4. Step 4: Simplify right side
    3,998.22x = 12,689,408.37
  5. Step 5: Solve for x
    x = 12,689,408.37/3,998.22
  6. Step 6: Final answer
    x = 3,173.76

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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.