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Finding the Fourth Proportional to 3,689.97, 5,091.97 and 2,011.37

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Solution

The fourth proportional to 3,689.97, 5,091.97 and 2,011.37 is: 2,775.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.97 : 5,091.97 = 2,011.37 : x
  2. Step 2: Convert to fraction form
    3,689.97/5,091.97 = 2,011.37/x
  3. Step 3: Cross multiply
    3,689.97x = 5,091.97 × 2,011.37
  4. Step 4: Simplify right side
    3,689.97x = 10,241,837.62
  5. Step 5: Solve for x
    x = 10,241,837.62/3,689.97
  6. Step 6: Final answer
    x = 2,775.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.