Home / 3,765.72-5,650.20-2,119.80

Finding the Fourth Proportional to 3,765.72, 5,650.20 and 2,119.80

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Solution

The fourth proportional to 3,765.72, 5,650.20 and 2,119.80 is: 3,180.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.72 : 5,650.20 = 2,119.80 : x
  2. Step 2: Convert to fraction form
    3,765.72/5,650.20 = 2,119.80/x
  3. Step 3: Cross multiply
    3,765.72x = 5,650.20 × 2,119.80
  4. Step 4: Simplify right side
    3,765.72x = 11,977,293.96
  5. Step 5: Solve for x
    x = 11,977,293.96/3,765.72
  6. Step 6: Final answer
    x = 3,180.61

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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.