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Finding the Fourth Proportional to 3,361.86, 5,040.78 and 1,974.54

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Solution

The fourth proportional to 3,361.86, 5,040.78 and 1,974.54 is: 2,960.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,361.86 : 5,040.78 = 1,974.54 : x
  2. Step 2: Convert to fraction form
    3,361.86/5,040.78 = 1,974.54/x
  3. Step 3: Cross multiply
    3,361.86x = 5,040.78 × 1,974.54
  4. Step 4: Simplify right side
    3,361.86x = 9,953,221.74
  5. Step 5: Solve for x
    x = 9,953,221.74/3,361.86
  6. Step 6: Final answer
    x = 2,960.63

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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.