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Finding the Fourth Proportional to 1,664.74, 2,498.64 and 843.59

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Solution

The fourth proportional to 1,664.74, 2,498.64 and 843.59 is: 1,266.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.74 : 2,498.64 = 843.59 : x
  2. Step 2: Convert to fraction form
    1,664.74/2,498.64 = 843.59/x
  3. Step 3: Cross multiply
    1,664.74x = 2,498.64 × 843.59
  4. Step 4: Simplify right side
    1,664.74x = 2,107,815.22
  5. Step 5: Solve for x
    x = 2,107,815.22/1,664.74
  6. Step 6: Final answer
    x = 1,266.15

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