Home / 3,720.21-5,578.29-1,122.81

Finding the Fourth Proportional to 3,720.21, 5,578.29 and 1,122.81

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Solution

The fourth proportional to 3,720.21, 5,578.29 and 1,122.81 is: 1,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.21 : 5,578.29 = 1,122.81 : x
  2. Step 2: Convert to fraction form
    3,720.21/5,578.29 = 1,122.81/x
  3. Step 3: Cross multiply
    3,720.21x = 5,578.29 × 1,122.81
  4. Step 4: Simplify right side
    3,720.21x = 6,263,359.79
  5. Step 5: Solve for x
    x = 6,263,359.79/3,720.21
  6. Step 6: Final answer
    x = 1,683.60

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