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Finding the Fourth Proportional to 7,686, 11,529.72 and 2,063.58

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Solution

The fourth proportional to 7,686, 11,529.72 and 2,063.58 is: 3,095.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,686 : 11,529.72 = 2,063.58 : x
  2. Step 2: Convert to fraction form
    7,686/11,529.72 = 2,063.58/x
  3. Step 3: Cross multiply
    7,686x = 11,529.72 × 2,063.58
  4. Step 4: Simplify right side
    7,686x = 23,792,499.60
  5. Step 5: Solve for x
    x = 23,792,499.60/7,686
  6. Step 6: Final answer
    x = 3,095.56

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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.