Home / 4,912.92-6,778.66-2,787.98

Finding the Fourth Proportional to 4,912.92, 6,778.66 and 2,787.98

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Solution

The fourth proportional to 4,912.92, 6,778.66 and 2,787.98 is: 3,846.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.92 : 6,778.66 = 2,787.98 : x
  2. Step 2: Convert to fraction form
    4,912.92/6,778.66 = 2,787.98/x
  3. Step 3: Cross multiply
    4,912.92x = 6,778.66 × 2,787.98
  4. Step 4: Simplify right side
    4,912.92x = 18,898,768.51
  5. Step 5: Solve for x
    x = 18,898,768.51/4,912.92
  6. Step 6: Final answer
    x = 3,846.75

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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.