Home / 3,921.80-5,885.60-1,581.80

Finding the Fourth Proportional to 3,921.80, 5,885.60 and 1,581.80

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Solution

The fourth proportional to 3,921.80, 5,885.60 and 1,581.80 is: 2,373.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.80 : 5,885.60 = 1,581.80 : x
  2. Step 2: Convert to fraction form
    3,921.80/5,885.60 = 1,581.80/x
  3. Step 3: Cross multiply
    3,921.80x = 5,885.60 × 1,581.80
  4. Step 4: Simplify right side
    3,921.80x = 9,309,842.08
  5. Step 5: Solve for x
    x = 9,309,842.08/3,921.80
  6. Step 6: Final answer
    x = 2,373.87

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