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Finding the Fourth Proportional to 2,940.84, 4,411.17 and 993.06

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Solution

The fourth proportional to 2,940.84, 4,411.17 and 993.06 is: 1,489.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.84 : 4,411.17 = 993.06 : x
  2. Step 2: Convert to fraction form
    2,940.84/4,411.17 = 993.06/x
  3. Step 3: Cross multiply
    2,940.84x = 4,411.17 × 993.06
  4. Step 4: Simplify right side
    2,940.84x = 4,380,556.48
  5. Step 5: Solve for x
    x = 4,380,556.48/2,940.84
  6. Step 6: Final answer
    x = 1,489.56

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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.