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Finding the Fourth Proportional to 7,891.56, 11,837.88 and 2,697.84

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Solution

The fourth proportional to 7,891.56, 11,837.88 and 2,697.84 is: 4,046.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.56 : 11,837.88 = 2,697.84 : x
  2. Step 2: Convert to fraction form
    7,891.56/11,837.88 = 2,697.84/x
  3. Step 3: Cross multiply
    7,891.56x = 11,837.88 × 2,697.84
  4. Step 4: Simplify right side
    7,891.56x = 31,936,706.18
  5. Step 5: Solve for x
    x = 31,936,706.18/7,891.56
  6. Step 6: Final answer
    x = 4,046.94

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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.