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Finding the Fourth Proportional to 7,987.80, 11,976.03 and 3,053.28

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Solution

The fourth proportional to 7,987.80, 11,976.03 and 3,053.28 is: 4,577.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.80 : 11,976.03 = 3,053.28 : x
  2. Step 2: Convert to fraction form
    7,987.80/11,976.03 = 3,053.28/x
  3. Step 3: Cross multiply
    7,987.80x = 11,976.03 × 3,053.28
  4. Step 4: Simplify right side
    7,987.80x = 36,566,172.88
  5. Step 5: Solve for x
    x = 36,566,172.88/7,987.80
  6. Step 6: Final answer
    x = 4,577.75

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