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Finding the Fourth Proportional to 2,781.91, 4,172.04 and 1,743.49

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Solution

The fourth proportional to 2,781.91, 4,172.04 and 1,743.49 is: 2,614.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.91 : 4,172.04 = 1,743.49 : x
  2. Step 2: Convert to fraction form
    2,781.91/4,172.04 = 1,743.49/x
  3. Step 3: Cross multiply
    2,781.91x = 4,172.04 × 1,743.49
  4. Step 4: Simplify right side
    2,781.91x = 7,273,910.02
  5. Step 5: Solve for x
    x = 7,273,910.02/2,781.91
  6. Step 6: Final answer
    x = 2,614.72

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1.5x scale

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.