Home / 3,939.85-5,909.28-1,166.46

Finding the Fourth Proportional to 3,939.85, 5,909.28 and 1,166.46

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Solution

The fourth proportional to 3,939.85, 5,909.28 and 1,166.46 is: 1,749.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.85 : 5,909.28 = 1,166.46 : x
  2. Step 2: Convert to fraction form
    3,939.85/5,909.28 = 1,166.46/x
  3. Step 3: Cross multiply
    3,939.85x = 5,909.28 × 1,166.46
  4. Step 4: Simplify right side
    3,939.85x = 6,892,938.75
  5. Step 5: Solve for x
    x = 6,892,938.75/3,939.85
  6. Step 6: Final answer
    x = 1,749.54

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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.