Home / 3,769.20-5,655.33-1,687.79

Finding the Fourth Proportional to 3,769.20, 5,655.33 and 1,687.79

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Solution

The fourth proportional to 3,769.20, 5,655.33 and 1,687.79 is: 2,532.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,769.20 : 5,655.33 = 1,687.79 : x
  2. Step 2: Convert to fraction form
    3,769.20/5,655.33 = 1,687.79/x
  3. Step 3: Cross multiply
    3,769.20x = 5,655.33 × 1,687.79
  4. Step 4: Simplify right side
    3,769.20x = 9,545,023.56
  5. Step 5: Solve for x
    x = 9,545,023.56/3,769.20
  6. Step 6: Final answer
    x = 2,532.37

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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.