Home / 3,839.20-5,757.54-1,206.70

Finding the Fourth Proportional to 3,839.20, 5,757.54 and 1,206.70

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Solution

The fourth proportional to 3,839.20, 5,757.54 and 1,206.70 is: 1,809.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.20 : 5,757.54 = 1,206.70 : x
  2. Step 2: Convert to fraction form
    3,839.20/5,757.54 = 1,206.70/x
  3. Step 3: Cross multiply
    3,839.20x = 5,757.54 × 1,206.70
  4. Step 4: Simplify right side
    3,839.20x = 6,947,623.52
  5. Step 5: Solve for x
    x = 6,947,623.52/3,839.20
  6. Step 6: Final answer
    x = 1,809.65

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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.