Home / 5,229.86-7,217.35-2,872.15

Finding the Fourth Proportional to 5,229.86, 7,217.35 and 2,872.15

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Solution

The fourth proportional to 5,229.86, 7,217.35 and 2,872.15 is: 3,963.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,229.86 : 7,217.35 = 2,872.15 : x
  2. Step 2: Convert to fraction form
    5,229.86/7,217.35 = 2,872.15/x
  3. Step 3: Cross multiply
    5,229.86x = 7,217.35 × 2,872.15
  4. Step 4: Simplify right side
    5,229.86x = 20,729,286.58
  5. Step 5: Solve for x
    x = 20,729,286.58/5,229.86
  6. Step 6: Final answer
    x = 3,963.64

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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.