Home / 4,912.14-6,778.38-3,119.48

Finding the Fourth Proportional to 4,912.14, 6,778.38 and 3,119.48

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Solution

The fourth proportional to 4,912.14, 6,778.38 and 3,119.48 is: 4,304.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.14 : 6,778.38 = 3,119.48 : x
  2. Step 2: Convert to fraction form
    4,912.14/6,778.38 = 3,119.48/x
  3. Step 3: Cross multiply
    4,912.14x = 6,778.38 × 3,119.48
  4. Step 4: Simplify right side
    4,912.14x = 21,145,020.84
  5. Step 5: Solve for x
    x = 21,145,020.84/4,912.14
  6. Step 6: Final answer
    x = 4,304.65

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1.5x scale

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.