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Finding the Fourth Proportional to 7,711.51, 11,567.30 and 1,868.11

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Solution

The fourth proportional to 7,711.51, 11,567.30 and 1,868.11 is: 2,802.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,711.51 : 11,567.30 = 1,868.11 : x
  2. Step 2: Convert to fraction form
    7,711.51/11,567.30 = 1,868.11/x
  3. Step 3: Cross multiply
    7,711.51x = 11,567.30 × 1,868.11
  4. Step 4: Simplify right side
    7,711.51x = 21,608,988.80
  5. Step 5: Solve for x
    x = 21,608,988.80/7,711.51
  6. Step 6: Final answer
    x = 2,802.17

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