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Finding the Fourth Proportional to 1,984.02, 2,976.70 and 667.92

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Solution

The fourth proportional to 1,984.02, 2,976.70 and 667.92 is: 1,002.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.02 : 2,976.70 = 667.92 : x
  2. Step 2: Convert to fraction form
    1,984.02/2,976.70 = 667.92/x
  3. Step 3: Cross multiply
    1,984.02x = 2,976.70 × 667.92
  4. Step 4: Simplify right side
    1,984.02x = 1,988,197.46
  5. Step 5: Solve for x
    x = 1,988,197.46/1,984.02
  6. Step 6: Final answer
    x = 1,002.11

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