Home / 2,912.75-4,367.30-1,351.78

Finding the Fourth Proportional to 2,912.75, 4,367.30 and 1,351.78

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Solution

The fourth proportional to 2,912.75, 4,367.30 and 1,351.78 is: 2,026.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.75 : 4,367.30 = 1,351.78 : x
  2. Step 2: Convert to fraction form
    2,912.75/4,367.30 = 1,351.78/x
  3. Step 3: Cross multiply
    2,912.75x = 4,367.30 × 1,351.78
  4. Step 4: Simplify right side
    2,912.75x = 5,903,628.79
  5. Step 5: Solve for x
    x = 5,903,628.79/2,912.75
  6. Step 6: Final answer
    x = 2,026.82

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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.