Home / 7,387.55-11,081.82-2,122.16

Finding the Fourth Proportional to 7,387.55, 11,081.82 and 2,122.16

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Solution

The fourth proportional to 7,387.55, 11,081.82 and 2,122.16 is: 3,183.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,387.55 : 11,081.82 = 2,122.16 : x
  2. Step 2: Convert to fraction form
    7,387.55/11,081.82 = 2,122.16/x
  3. Step 3: Cross multiply
    7,387.55x = 11,081.82 × 2,122.16
  4. Step 4: Simplify right side
    7,387.55x = 23,517,339.72
  5. Step 5: Solve for x
    x = 23,517,339.72/7,387.55
  6. Step 6: Final answer
    x = 3,183.38

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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.