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Finding the Fourth Proportional to 7,999.22, 11,998.83 and 2,805.10

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Solution

The fourth proportional to 7,999.22, 11,998.83 and 2,805.10 is: 4,207.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.22 : 11,998.83 = 2,805.10 : x
  2. Step 2: Convert to fraction form
    7,999.22/11,998.83 = 2,805.10/x
  3. Step 3: Cross multiply
    7,999.22x = 11,998.83 × 2,805.10
  4. Step 4: Simplify right side
    7,999.22x = 33,657,918.03
  5. Step 5: Solve for x
    x = 33,657,918.03/7,999.22
  6. Step 6: Final answer
    x = 4,207.65

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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.