Home / 2,743.28-4,112.64-1,281.68

Finding the Fourth Proportional to 2,743.28, 4,112.64 and 1,281.68

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Solution

The fourth proportional to 2,743.28, 4,112.64 and 1,281.68 is: 1,921.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,743.28 : 4,112.64 = 1,281.68 : x
  2. Step 2: Convert to fraction form
    2,743.28/4,112.64 = 1,281.68/x
  3. Step 3: Cross multiply
    2,743.28x = 4,112.64 × 1,281.68
  4. Step 4: Simplify right side
    2,743.28x = 5,271,088.44
  5. Step 5: Solve for x
    x = 5,271,088.44/2,743.28
  6. Step 6: Final answer
    x = 1,921.45

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