Home / 3,398.81-4,690.58-1,906.83

Finding the Fourth Proportional to 3,398.81, 4,690.58 and 1,906.83

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Solution

The fourth proportional to 3,398.81, 4,690.58 and 1,906.83 is: 2,631.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.81 : 4,690.58 = 1,906.83 : x
  2. Step 2: Convert to fraction form
    3,398.81/4,690.58 = 1,906.83/x
  3. Step 3: Cross multiply
    3,398.81x = 4,690.58 × 1,906.83
  4. Step 4: Simplify right side
    3,398.81x = 8,944,138.66
  5. Step 5: Solve for x
    x = 8,944,138.66/3,398.81
  6. Step 6: Final answer
    x = 2,631.55

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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.