Home / 2,648.26-3,971.57-1,831.78

Finding the Fourth Proportional to 2,648.26, 3,971.57 and 1,831.78

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Solution

The fourth proportional to 2,648.26, 3,971.57 and 1,831.78 is: 2,747.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,648.26 : 3,971.57 = 1,831.78 : x
  2. Step 2: Convert to fraction form
    2,648.26/3,971.57 = 1,831.78/x
  3. Step 3: Cross multiply
    2,648.26x = 3,971.57 × 1,831.78
  4. Step 4: Simplify right side
    2,648.26x = 7,275,023.41
  5. Step 5: Solve for x
    x = 7,275,023.41/2,648.26
  6. Step 6: Final answer
    x = 2,747.10

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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.