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Finding the Fourth Proportional to 3,689.73, 5,091.98 and 2,011.23

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Solution

The fourth proportional to 3,689.73, 5,091.98 and 2,011.23 is: 2,775.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.73 : 5,091.98 = 2,011.23 : x
  2. Step 2: Convert to fraction form
    3,689.73/5,091.98 = 2,011.23/x
  3. Step 3: Cross multiply
    3,689.73x = 5,091.98 × 2,011.23
  4. Step 4: Simplify right side
    3,689.73x = 10,241,132.88
  5. Step 5: Solve for x
    x = 10,241,132.88/3,689.73
  6. Step 6: Final answer
    x = 2,775.58

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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.