Home / 2,629.24-3,943.92-681.52

Finding the Fourth Proportional to 2,629.24, 3,943.92 and 681.52

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Solution

The fourth proportional to 2,629.24, 3,943.92 and 681.52 is: 1,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.24 : 3,943.92 = 681.52 : x
  2. Step 2: Convert to fraction form
    2,629.24/3,943.92 = 681.52/x
  3. Step 3: Cross multiply
    2,629.24x = 3,943.92 × 681.52
  4. Step 4: Simplify right side
    2,629.24x = 2,687,860.36
  5. Step 5: Solve for x
    x = 2,687,860.36/2,629.24
  6. Step 6: Final answer
    x = 1,022.30

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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.