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Finding the Fourth Proportional to 7,998.72, 11,996.64 and 2,806.08

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Solution

The fourth proportional to 7,998.72, 11,996.64 and 2,806.08 is: 4,208.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.72 : 11,996.64 = 2,806.08 : x
  2. Step 2: Convert to fraction form
    7,998.72/11,996.64 = 2,806.08/x
  3. Step 3: Cross multiply
    7,998.72x = 11,996.64 × 2,806.08
  4. Step 4: Simplify right side
    7,998.72x = 33,663,531.57
  5. Step 5: Solve for x
    x = 33,663,531.57/7,998.72
  6. Step 6: Final answer
    x = 4,208.61

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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.