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Finding the Fourth Proportional to 2,584.62, 3,877.07 and 853.38

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Solution

The fourth proportional to 2,584.62, 3,877.07 and 853.38 is: 1,280.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,584.62 : 3,877.07 = 853.38 : x
  2. Step 2: Convert to fraction form
    2,584.62/3,877.07 = 853.38/x
  3. Step 3: Cross multiply
    2,584.62x = 3,877.07 × 853.38
  4. Step 4: Simplify right side
    2,584.62x = 3,308,609.73
  5. Step 5: Solve for x
    x = 3,308,609.73/2,584.62
  6. Step 6: Final answer
    x = 1,280.11

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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.