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Finding the Fourth Proportional to 3,936.07, 5,898.72 and 2,178.46

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Solution

The fourth proportional to 3,936.07, 5,898.72 and 2,178.46 is: 3,264.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.07 : 5,898.72 = 2,178.46 : x
  2. Step 2: Convert to fraction form
    3,936.07/5,898.72 = 2,178.46/x
  3. Step 3: Cross multiply
    3,936.07x = 5,898.72 × 2,178.46
  4. Step 4: Simplify right side
    3,936.07x = 12,850,125.57
  5. Step 5: Solve for x
    x = 12,850,125.57/3,936.07
  6. Step 6: Final answer
    x = 3,264.71

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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.