Home / 4,142.43-6,213.71-1,221.03

Finding the Fourth Proportional to 4,142.43, 6,213.71 and 1,221.03

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Solution

The fourth proportional to 4,142.43, 6,213.71 and 1,221.03 is: 1,831.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,142.43 : 6,213.71 = 1,221.03 : x
  2. Step 2: Convert to fraction form
    4,142.43/6,213.71 = 1,221.03/x
  3. Step 3: Cross multiply
    4,142.43x = 6,213.71 × 1,221.03
  4. Step 4: Simplify right side
    4,142.43x = 7,587,126.32
  5. Step 5: Solve for x
    x = 7,587,126.32/4,142.43
  6. Step 6: Final answer
    x = 1,831.56

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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.