Home / 3,912.91-5,399.16-2,586.13

Finding the Fourth Proportional to 3,912.91, 5,399.16 and 2,586.13

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Solution

The fourth proportional to 3,912.91, 5,399.16 and 2,586.13 is: 3,568.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.91 : 5,399.16 = 2,586.13 : x
  2. Step 2: Convert to fraction form
    3,912.91/5,399.16 = 2,586.13/x
  3. Step 3: Cross multiply
    3,912.91x = 5,399.16 × 2,586.13
  4. Step 4: Simplify right side
    3,912.91x = 13,962,906.45
  5. Step 5: Solve for x
    x = 13,962,906.45/3,912.91
  6. Step 6: Final answer
    x = 3,568.42

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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.