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Finding the Fourth Proportional to 7,617.97, 11,415.09 and 3,664.96

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Solution

The fourth proportional to 7,617.97, 11,415.09 and 3,664.96 is: 5,491.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,617.97 : 11,415.09 = 3,664.96 : x
  2. Step 2: Convert to fraction form
    7,617.97/11,415.09 = 3,664.96/x
  3. Step 3: Cross multiply
    7,617.97x = 11,415.09 × 3,664.96
  4. Step 4: Simplify right side
    7,617.97x = 41,835,848.25
  5. Step 5: Solve for x
    x = 41,835,848.25/7,617.97
  6. Step 6: Final answer
    x = 5,491.73

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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.