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Finding the Fourth Proportional to 6,511.79, 9,767.28 and 2,811.42

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Solution

The fourth proportional to 6,511.79, 9,767.28 and 2,811.42 is: 4,216.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.79 : 9,767.28 = 2,811.42 : x
  2. Step 2: Convert to fraction form
    6,511.79/9,767.28 = 2,811.42/x
  3. Step 3: Cross multiply
    6,511.79x = 9,767.28 × 2,811.42
  4. Step 4: Simplify right side
    6,511.79x = 27,459,926.34
  5. Step 5: Solve for x
    x = 27,459,926.34/6,511.79
  6. Step 6: Final answer
    x = 4,216.96

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