Home / 9,217.62-12,720.45-5,238.82

Finding the Fourth Proportional to 9,217.62, 12,720.45 and 5,238.82

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Solution

The fourth proportional to 9,217.62, 12,720.45 and 5,238.82 is: 7,229.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,217.62 : 12,720.45 = 5,238.82 : x
  2. Step 2: Convert to fraction form
    9,217.62/12,720.45 = 5,238.82/x
  3. Step 3: Cross multiply
    9,217.62x = 12,720.45 × 5,238.82
  4. Step 4: Simplify right side
    9,217.62x = 66,640,147.87
  5. Step 5: Solve for x
    x = 66,640,147.87/9,217.62
  6. Step 6: Final answer
    x = 7,229.65

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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.