Home / 2,475.22-3,712.43-831.38

Finding the Fourth Proportional to 2,475.22, 3,712.43 and 831.38

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Solution

The fourth proportional to 2,475.22, 3,712.43 and 831.38 is: 1,246.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,475.22 : 3,712.43 = 831.38 : x
  2. Step 2: Convert to fraction form
    2,475.22/3,712.43 = 831.38/x
  3. Step 3: Cross multiply
    2,475.22x = 3,712.43 × 831.38
  4. Step 4: Simplify right side
    2,475.22x = 3,086,440.05
  5. Step 5: Solve for x
    x = 3,086,440.05/2,475.22
  6. Step 6: Final answer
    x = 1,246.94

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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.