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Finding the Fourth Proportional to 1,831.68, 2,747.04 and 1,447.20

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Solution

The fourth proportional to 1,831.68, 2,747.04 and 1,447.20 is: 2,170.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.68 : 2,747.04 = 1,447.20 : x
  2. Step 2: Convert to fraction form
    1,831.68/2,747.04 = 1,447.20/x
  3. Step 3: Cross multiply
    1,831.68x = 2,747.04 × 1,447.20
  4. Step 4: Simplify right side
    1,831.68x = 3,975,516.29
  5. Step 5: Solve for x
    x = 3,975,516.29/1,831.68
  6. Step 6: Final answer
    x = 2,170.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.