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Finding the Fourth Proportional to 4,902.78, 7,356.33 and 1,982.46

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Solution

The fourth proportional to 4,902.78, 7,356.33 and 1,982.46 is: 2,974.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,902.78 : 7,356.33 = 1,982.46 : x
  2. Step 2: Convert to fraction form
    4,902.78/7,356.33 = 1,982.46/x
  3. Step 3: Cross multiply
    4,902.78x = 7,356.33 × 1,982.46
  4. Step 4: Simplify right side
    4,902.78x = 14,583,629.97
  5. Step 5: Solve for x
    x = 14,583,629.97/4,902.78
  6. Step 6: Final answer
    x = 2,974.56

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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.