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Finding the Fourth Proportional to 3,576.86, 4,936.05 and 2,179.61

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Solution

The fourth proportional to 3,576.86, 4,936.05 and 2,179.61 is: 3,007.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,576.86 : 4,936.05 = 2,179.61 : x
  2. Step 2: Convert to fraction form
    3,576.86/4,936.05 = 2,179.61/x
  3. Step 3: Cross multiply
    3,576.86x = 4,936.05 × 2,179.61
  4. Step 4: Simplify right side
    3,576.86x = 10,758,663.94
  5. Step 5: Solve for x
    x = 10,758,663.94/3,576.86
  6. Step 6: Final answer
    x = 3,007.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.