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Finding the Fourth Proportional to 3,871.82, 5,807.73 and 2,722.70

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Solution

The fourth proportional to 3,871.82, 5,807.73 and 2,722.70 is: 4,084.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.82 : 5,807.73 = 2,722.70 : x
  2. Step 2: Convert to fraction form
    3,871.82/5,807.73 = 2,722.70/x
  3. Step 3: Cross multiply
    3,871.82x = 5,807.73 × 2,722.70
  4. Step 4: Simplify right side
    3,871.82x = 15,812,706.47
  5. Step 5: Solve for x
    x = 15,812,706.47/3,871.82
  6. Step 6: Final answer
    x = 4,084.05

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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.