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Finding the Fourth Proportional to 7,992.65, 11,988.99 and 2,797.31

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Solution

The fourth proportional to 7,992.65, 11,988.99 and 2,797.31 is: 4,195.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.65 : 11,988.99 = 2,797.31 : x
  2. Step 2: Convert to fraction form
    7,992.65/11,988.99 = 2,797.31/x
  3. Step 3: Cross multiply
    7,992.65x = 11,988.99 × 2,797.31
  4. Step 4: Simplify right side
    7,992.65x = 33,536,921.62
  5. Step 5: Solve for x
    x = 33,536,921.62/7,992.65
  6. Step 6: Final answer
    x = 4,195.97

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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.