Home / 9,121.62-13,684.32-3,856.62

Finding the Fourth Proportional to 9,121.62, 13,684.32 and 3,856.62

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Solution

The fourth proportional to 9,121.62, 13,684.32 and 3,856.62 is: 5,785.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.62 : 13,684.32 = 3,856.62 : x
  2. Step 2: Convert to fraction form
    9,121.62/13,684.32 = 3,856.62/x
  3. Step 3: Cross multiply
    9,121.62x = 13,684.32 × 3,856.62
  4. Step 4: Simplify right side
    9,121.62x = 52,775,222.20
  5. Step 5: Solve for x
    x = 52,775,222.20/9,121.62
  6. Step 6: Final answer
    x = 5,785.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.