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Finding the Fourth Proportional to 7,689.34, 11,537.45 and 3,738.43

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Solution

The fourth proportional to 7,689.34, 11,537.45 and 3,738.43 is: 5,609.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.34 : 11,537.45 = 3,738.43 : x
  2. Step 2: Convert to fraction form
    7,689.34/11,537.45 = 3,738.43/x
  3. Step 3: Cross multiply
    7,689.34x = 11,537.45 × 3,738.43
  4. Step 4: Simplify right side
    7,689.34x = 43,131,949.20
  5. Step 5: Solve for x
    x = 43,131,949.20/7,689.34
  6. Step 6: Final answer
    x = 5,609.32

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