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Finding the Fourth Proportional to 5,877.19, 8,815.81 and 1,981.63

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Solution

The fourth proportional to 5,877.19, 8,815.81 and 1,981.63 is: 2,972.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,877.19 : 8,815.81 = 1,981.63 : x
  2. Step 2: Convert to fraction form
    5,877.19/8,815.81 = 1,981.63/x
  3. Step 3: Cross multiply
    5,877.19x = 8,815.81 × 1,981.63
  4. Step 4: Simplify right side
    5,877.19x = 17,469,673.57
  5. Step 5: Solve for x
    x = 17,469,673.57/5,877.19
  6. Step 6: Final answer
    x = 2,972.45

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