Home / 2,489.30-3,727.47-1,329.38

Finding the Fourth Proportional to 2,489.30, 3,727.47 and 1,329.38

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Solution

The fourth proportional to 2,489.30, 3,727.47 and 1,329.38 is: 1,990.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.30 : 3,727.47 = 1,329.38 : x
  2. Step 2: Convert to fraction form
    2,489.30/3,727.47 = 1,329.38/x
  3. Step 3: Cross multiply
    2,489.30x = 3,727.47 × 1,329.38
  4. Step 4: Simplify right side
    2,489.30x = 4,955,224.07
  5. Step 5: Solve for x
    x = 4,955,224.07/2,489.30
  6. Step 6: Final answer
    x = 1,990.61

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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.