Home / 7,687.75-11,531.64-2,141.09

Finding the Fourth Proportional to 7,687.75, 11,531.64 and 2,141.09

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Solution

The fourth proportional to 7,687.75, 11,531.64 and 2,141.09 is: 3,211.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,687.75 : 11,531.64 = 2,141.09 : x
  2. Step 2: Convert to fraction form
    7,687.75/11,531.64 = 2,141.09/x
  3. Step 3: Cross multiply
    7,687.75x = 11,531.64 × 2,141.09
  4. Step 4: Simplify right side
    7,687.75x = 24,690,268.38
  5. Step 5: Solve for x
    x = 24,690,268.38/7,687.75
  6. Step 6: Final answer
    x = 3,211.64

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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.