Home / 3,912.80-5,400.14-2,589.24

Finding the Fourth Proportional to 3,912.80, 5,400.14 and 2,589.24

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Solution

The fourth proportional to 3,912.80, 5,400.14 and 2,589.24 is: 3,573.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.80 : 5,400.14 = 2,589.24 : x
  2. Step 2: Convert to fraction form
    3,912.80/5,400.14 = 2,589.24/x
  3. Step 3: Cross multiply
    3,912.80x = 5,400.14 × 2,589.24
  4. Step 4: Simplify right side
    3,912.80x = 13,982,258.49
  5. Step 5: Solve for x
    x = 13,982,258.49/3,912.80
  6. Step 6: Final answer
    x = 3,573.47

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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.