Home / 5,220.54-7,831.71-2,757.42

Finding the Fourth Proportional to 5,220.54, 7,831.71 and 2,757.42

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Solution

The fourth proportional to 5,220.54, 7,831.71 and 2,757.42 is: 4,136.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.54 : 7,831.71 = 2,757.42 : x
  2. Step 2: Convert to fraction form
    5,220.54/7,831.71 = 2,757.42/x
  3. Step 3: Cross multiply
    5,220.54x = 7,831.71 × 2,757.42
  4. Step 4: Simplify right side
    5,220.54x = 21,595,313.79
  5. Step 5: Solve for x
    x = 21,595,313.79/5,220.54
  6. Step 6: Final answer
    x = 4,136.61

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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.