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Finding the Fourth Proportional to 7,848.20, 11,750.70 and 6,120.20

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Solution

The fourth proportional to 7,848.20, 11,750.70 and 6,120.20 is: 9,163.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,848.20 : 11,750.70 = 6,120.20 : x
  2. Step 2: Convert to fraction form
    7,848.20/11,750.70 = 6,120.20/x
  3. Step 3: Cross multiply
    7,848.20x = 11,750.70 × 6,120.20
  4. Step 4: Simplify right side
    7,848.20x = 71,916,634.14
  5. Step 5: Solve for x
    x = 71,916,634.14/7,848.20
  6. Step 6: Final answer
    x = 9,163.46

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