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Finding the Fourth Proportional to 5,361.78, 8,045.41 and 2,553.79

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Solution

The fourth proportional to 5,361.78, 8,045.41 and 2,553.79 is: 3,831.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,361.78 : 8,045.41 = 2,553.79 : x
  2. Step 2: Convert to fraction form
    5,361.78/8,045.41 = 2,553.79/x
  3. Step 3: Cross multiply
    5,361.78x = 8,045.41 × 2,553.79
  4. Step 4: Simplify right side
    5,361.78x = 20,546,287.60
  5. Step 5: Solve for x
    x = 20,546,287.60/5,361.78
  6. Step 6: Final answer
    x = 3,831.99

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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.