Home / 3,390.28-5,080.89-1,440.04

Finding the Fourth Proportional to 3,390.28, 5,080.89 and 1,440.04

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Solution

The fourth proportional to 3,390.28, 5,080.89 and 1,440.04 is: 2,158.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.28 : 5,080.89 = 1,440.04 : x
  2. Step 2: Convert to fraction form
    3,390.28/5,080.89 = 1,440.04/x
  3. Step 3: Cross multiply
    3,390.28x = 5,080.89 × 1,440.04
  4. Step 4: Simplify right side
    3,390.28x = 7,316,684.84
  5. Step 5: Solve for x
    x = 7,316,684.84/3,390.28
  6. Step 6: Final answer
    x = 2,158.14

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