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Finding the Fourth Proportional to 7,996.50, 11,992.90 and 2,153.56

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Solution

The fourth proportional to 7,996.50, 11,992.90 and 2,153.56 is: 3,229.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,996.50 : 11,992.90 = 2,153.56 : x
  2. Step 2: Convert to fraction form
    7,996.50/11,992.90 = 2,153.56/x
  3. Step 3: Cross multiply
    7,996.50x = 11,992.90 × 2,153.56
  4. Step 4: Simplify right side
    7,996.50x = 25,827,429.72
  5. Step 5: Solve for x
    x = 25,827,429.72/7,996.50
  6. Step 6: Final answer
    x = 3,229.84

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Half scale
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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.