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Finding the Fourth Proportional to 7,706.82, 11,559.87 and 5,359.89

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Solution

The fourth proportional to 7,706.82, 11,559.87 and 5,359.89 is: 8,039.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,706.82 : 11,559.87 = 5,359.89 : x
  2. Step 2: Convert to fraction form
    7,706.82/11,559.87 = 5,359.89/x
  3. Step 3: Cross multiply
    7,706.82x = 11,559.87 × 5,359.89
  4. Step 4: Simplify right side
    7,706.82x = 61,959,631.61
  5. Step 5: Solve for x
    x = 61,959,631.61/7,706.82
  6. Step 6: Final answer
    x = 8,039.58

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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.