Home / 3,939.06-5,907.20-1,306.11

Finding the Fourth Proportional to 3,939.06, 5,907.20 and 1,306.11

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Solution

The fourth proportional to 3,939.06, 5,907.20 and 1,306.11 is: 1,958.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.06 : 5,907.20 = 1,306.11 : x
  2. Step 2: Convert to fraction form
    3,939.06/5,907.20 = 1,306.11/x
  3. Step 3: Cross multiply
    3,939.06x = 5,907.20 × 1,306.11
  4. Step 4: Simplify right side
    3,939.06x = 7,715,446.46
  5. Step 5: Solve for x
    x = 7,715,446.46/3,939.06
  6. Step 6: Final answer
    x = 1,958.70

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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.