Home / 1,687.78-2,531.67-1,110.52

Finding the Fourth Proportional to 1,687.78, 2,531.67 and 1,110.52

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Solution

The fourth proportional to 1,687.78, 2,531.67 and 1,110.52 is: 1,665.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.78 : 2,531.67 = 1,110.52 : x
  2. Step 2: Convert to fraction form
    1,687.78/2,531.67 = 1,110.52/x
  3. Step 3: Cross multiply
    1,687.78x = 2,531.67 × 1,110.52
  4. Step 4: Simplify right side
    1,687.78x = 2,811,470.17
  5. Step 5: Solve for x
    x = 2,811,470.17/1,687.78
  6. Step 6: Final answer
    x = 1,665.78

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