Home / 3,914.20-5,403.07-2,589.72

Finding the Fourth Proportional to 3,914.20, 5,403.07 and 2,589.72

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Solution

The fourth proportional to 3,914.20, 5,403.07 and 2,589.72 is: 3,574.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.20 : 5,403.07 = 2,589.72 : x
  2. Step 2: Convert to fraction form
    3,914.20/5,403.07 = 2,589.72/x
  3. Step 3: Cross multiply
    3,914.20x = 5,403.07 × 2,589.72
  4. Step 4: Simplify right side
    3,914.20x = 13,992,438.44
  5. Step 5: Solve for x
    x = 13,992,438.44/3,914.20
  6. Step 6: Final answer
    x = 3,574.79

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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.