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Finding the Fourth Proportional to 7,772.78, 11,661.32 and 3,096.07

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Solution

The fourth proportional to 7,772.78, 11,661.32 and 3,096.07 is: 4,644.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.78 : 11,661.32 = 3,096.07 : x
  2. Step 2: Convert to fraction form
    7,772.78/11,661.32 = 3,096.07/x
  3. Step 3: Cross multiply
    7,772.78x = 11,661.32 × 3,096.07
  4. Step 4: Simplify right side
    7,772.78x = 36,104,263.01
  5. Step 5: Solve for x
    x = 36,104,263.01/7,772.78
  6. Step 6: Final answer
    x = 4,644.96

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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.