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Finding the Fourth Proportional to 7,719.12, 11,579.16 and 3,102

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Solution

The fourth proportional to 7,719.12, 11,579.16 and 3,102 is: 4,653.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.12 : 11,579.16 = 3,102 : x
  2. Step 2: Convert to fraction form
    7,719.12/11,579.16 = 3,102/x
  3. Step 3: Cross multiply
    7,719.12x = 11,579.16 × 3,102
  4. Step 4: Simplify right side
    7,719.12x = 35,918,554.32
  5. Step 5: Solve for x
    x = 35,918,554.32/7,719.12
  6. Step 6: Final answer
    x = 4,653.19

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