Home / 3,398.93-4,690.19-1,906.50

Finding the Fourth Proportional to 3,398.93, 4,690.19 and 1,906.50

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Solution

The fourth proportional to 3,398.93, 4,690.19 and 1,906.50 is: 2,630.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.93 : 4,690.19 = 1,906.50 : x
  2. Step 2: Convert to fraction form
    3,398.93/4,690.19 = 1,906.50/x
  3. Step 3: Cross multiply
    3,398.93x = 4,690.19 × 1,906.50
  4. Step 4: Simplify right side
    3,398.93x = 8,941,837.70
  5. Step 5: Solve for x
    x = 8,941,837.70/3,398.93
  6. Step 6: Final answer
    x = 2,630.78

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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.