Home / 2,831.75-4,246.94-1,188.32

Finding the Fourth Proportional to 2,831.75, 4,246.94 and 1,188.32

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Solution

The fourth proportional to 2,831.75, 4,246.94 and 1,188.32 is: 1,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.75 : 4,246.94 = 1,188.32 : x
  2. Step 2: Convert to fraction form
    2,831.75/4,246.94 = 1,188.32/x
  3. Step 3: Cross multiply
    2,831.75x = 4,246.94 × 1,188.32
  4. Step 4: Simplify right side
    2,831.75x = 5,046,737.33
  5. Step 5: Solve for x
    x = 5,046,737.33/2,831.75
  6. Step 6: Final answer
    x = 1,782.20

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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.