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Finding the Fourth Proportional to 8,362.31, 12,545.31 and 2,815.47

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Solution

The fourth proportional to 8,362.31, 12,545.31 and 2,815.47 is: 4,223.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,362.31 : 12,545.31 = 2,815.47 : x
  2. Step 2: Convert to fraction form
    8,362.31/12,545.31 = 2,815.47/x
  3. Step 3: Cross multiply
    8,362.31x = 12,545.31 × 2,815.47
  4. Step 4: Simplify right side
    8,362.31x = 35,320,943.95
  5. Step 5: Solve for x
    x = 35,320,943.95/8,362.31
  6. Step 6: Final answer
    x = 4,223.83

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