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Finding the Fourth Proportional to 7,992.84, 11,996.94 and 7,489.80

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Solution

The fourth proportional to 7,992.84, 11,996.94 and 7,489.80 is: 11,241.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.84 : 11,996.94 = 7,489.80 : x
  2. Step 2: Convert to fraction form
    7,992.84/11,996.94 = 7,489.80/x
  3. Step 3: Cross multiply
    7,992.84x = 11,996.94 × 7,489.80
  4. Step 4: Simplify right side
    7,992.84x = 89,854,681.21
  5. Step 5: Solve for x
    x = 89,854,681.21/7,992.84
  6. Step 6: Final answer
    x = 11,241.90

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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.