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Finding the Fourth Proportional to 3,889.22, 5,340.02 and 3,787.73

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Solution

The fourth proportional to 3,889.22, 5,340.02 and 3,787.73 is: 5,200.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.22 : 5,340.02 = 3,787.73 : x
  2. Step 2: Convert to fraction form
    3,889.22/5,340.02 = 3,787.73/x
  3. Step 3: Cross multiply
    3,889.22x = 5,340.02 × 3,787.73
  4. Step 4: Simplify right side
    3,889.22x = 20,226,579.68
  5. Step 5: Solve for x
    x = 20,226,579.68/3,889.22
  6. Step 6: Final answer
    x = 5,200.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.