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Finding the Fourth Proportional to 7,696.75, 11,545.67 and 3,079.75

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Solution

The fourth proportional to 7,696.75, 11,545.67 and 3,079.75 is: 4,619.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,696.75 : 11,545.67 = 3,079.75 : x
  2. Step 2: Convert to fraction form
    7,696.75/11,545.67 = 3,079.75/x
  3. Step 3: Cross multiply
    7,696.75x = 11,545.67 × 3,079.75
  4. Step 4: Simplify right side
    7,696.75x = 35,557,777.18
  5. Step 5: Solve for x
    x = 35,557,777.18/7,696.75
  6. Step 6: Final answer
    x = 4,619.84

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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.