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Finding the Fourth Proportional to 1,581.43, 2,368.90 and 1,271.61

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Solution

The fourth proportional to 1,581.43, 2,368.90 and 1,271.61 is: 1,904.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.43 : 2,368.90 = 1,271.61 : x
  2. Step 2: Convert to fraction form
    1,581.43/2,368.90 = 1,271.61/x
  3. Step 3: Cross multiply
    1,581.43x = 2,368.90 × 1,271.61
  4. Step 4: Simplify right side
    1,581.43x = 3,012,316.93
  5. Step 5: Solve for x
    x = 3,012,316.93/1,581.43
  6. Step 6: Final answer
    x = 1,904.81

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