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Finding the Fourth Proportional to 7,999.91, 11,992.56 and 2,802.95

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Solution

The fourth proportional to 7,999.91, 11,992.56 and 2,802.95 is: 4,201.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.91 : 11,992.56 = 2,802.95 : x
  2. Step 2: Convert to fraction form
    7,999.91/11,992.56 = 2,802.95/x
  3. Step 3: Cross multiply
    7,999.91x = 11,992.56 × 2,802.95
  4. Step 4: Simplify right side
    7,999.91x = 33,614,546.05
  5. Step 5: Solve for x
    x = 33,614,546.05/7,999.91
  6. Step 6: Final answer
    x = 4,201.87

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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.