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Finding the Fourth Proportional to 3,689.84, 5,092 and 2,011.26

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Solution

The fourth proportional to 3,689.84, 5,092 and 2,011.26 is: 2,775.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.84 : 5,092 = 2,011.26 : x
  2. Step 2: Convert to fraction form
    3,689.84/5,092 = 2,011.26/x
  3. Step 3: Cross multiply
    3,689.84x = 5,092 × 2,011.26
  4. Step 4: Simplify right side
    3,689.84x = 10,241,335.92
  5. Step 5: Solve for x
    x = 10,241,335.92/3,689.84
  6. Step 6: Final answer
    x = 2,775.55

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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.