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Finding the Fourth Proportional to 2,115.97, 3,174.33 and 884.25

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Solution

The fourth proportional to 2,115.97, 3,174.33 and 884.25 is: 1,326.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.97 : 3,174.33 = 884.25 : x
  2. Step 2: Convert to fraction form
    2,115.97/3,174.33 = 884.25/x
  3. Step 3: Cross multiply
    2,115.97x = 3,174.33 × 884.25
  4. Step 4: Simplify right side
    2,115.97x = 2,806,890.72
  5. Step 5: Solve for x
    x = 2,806,890.72/2,115.97
  6. Step 6: Final answer
    x = 1,326.52

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Double scale
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Similar ratio
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1.5x scale

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.