Home / 2,936.73-4,378.78-2,687.96

Finding the Fourth Proportional to 2,936.73, 4,378.78 and 2,687.96

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Solution

The fourth proportional to 2,936.73, 4,378.78 and 2,687.96 is: 4,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,936.73 : 4,378.78 = 2,687.96 : x
  2. Step 2: Convert to fraction form
    2,936.73/4,378.78 = 2,687.96/x
  3. Step 3: Cross multiply
    2,936.73x = 4,378.78 × 2,687.96
  4. Step 4: Simplify right side
    2,936.73x = 11,769,995.04
  5. Step 5: Solve for x
    x = 11,769,995.04/2,936.73
  6. Step 6: Final answer
    x = 4,007.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.