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Finding the Fourth Proportional to 3,791.49, 5,689.85 and 1,326.33

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Solution

The fourth proportional to 3,791.49, 5,689.85 and 1,326.33 is: 1,990.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.49 : 5,689.85 = 1,326.33 : x
  2. Step 2: Convert to fraction form
    3,791.49/5,689.85 = 1,326.33/x
  3. Step 3: Cross multiply
    3,791.49x = 5,689.85 × 1,326.33
  4. Step 4: Simplify right side
    3,791.49x = 7,546,612.12
  5. Step 5: Solve for x
    x = 7,546,612.12/3,791.49
  6. Step 6: Final answer
    x = 1,990.41

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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.