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Finding the Fourth Proportional to 3,781.98, 5,672.97 and 1,834.47

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Solution

The fourth proportional to 3,781.98, 5,672.97 and 1,834.47 is: 2,751.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.98 : 5,672.97 = 1,834.47 : x
  2. Step 2: Convert to fraction form
    3,781.98/5,672.97 = 1,834.47/x
  3. Step 3: Cross multiply
    3,781.98x = 5,672.97 × 1,834.47
  4. Step 4: Simplify right side
    3,781.98x = 10,406,893.28
  5. Step 5: Solve for x
    x = 10,406,893.28/3,781.98
  6. Step 6: Final answer
    x = 2,751.71

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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.