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Finding the Fourth Proportional to 3,398.73, 4,690.02 and 1,906.41

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Solution

The fourth proportional to 3,398.73, 4,690.02 and 1,906.41 is: 2,630.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.73 : 4,690.02 = 1,906.41 : x
  2. Step 2: Convert to fraction form
    3,398.73/4,690.02 = 1,906.41/x
  3. Step 3: Cross multiply
    3,398.73x = 4,690.02 × 1,906.41
  4. Step 4: Simplify right side
    3,398.73x = 8,941,101.03
  5. Step 5: Solve for x
    x = 8,941,101.03/3,398.73
  6. Step 6: Final answer
    x = 2,630.72

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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.