Home / 3,398.58-4,690.49-1,906.61

Finding the Fourth Proportional to 3,398.58, 4,690.49 and 1,906.61

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Solution

The fourth proportional to 3,398.58, 4,690.49 and 1,906.61 is: 2,631.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.58 : 4,690.49 = 1,906.61 : x
  2. Step 2: Convert to fraction form
    3,398.58/4,690.49 = 1,906.61/x
  3. Step 3: Cross multiply
    3,398.58x = 4,690.49 × 1,906.61
  4. Step 4: Simplify right side
    3,398.58x = 8,942,902.15
  5. Step 5: Solve for x
    x = 8,942,902.15/3,398.58
  6. Step 6: Final answer
    x = 2,631.36

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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.