Home / 2,831.58-3,906.54-1,711.71

Finding the Fourth Proportional to 2,831.58, 3,906.54 and 1,711.71

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Solution

The fourth proportional to 2,831.58, 3,906.54 and 1,711.71 is: 2,361.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.58 : 3,906.54 = 1,711.71 : x
  2. Step 2: Convert to fraction form
    2,831.58/3,906.54 = 1,711.71/x
  3. Step 3: Cross multiply
    2,831.58x = 3,906.54 × 1,711.71
  4. Step 4: Simplify right side
    2,831.58x = 6,686,863.58
  5. Step 5: Solve for x
    x = 6,686,863.58/2,831.58
  6. Step 6: Final answer
    x = 2,361.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.