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Finding the Fourth Proportional to 3,398.92, 4,690.58 and 1,906.94

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Solution

The fourth proportional to 3,398.92, 4,690.58 and 1,906.94 is: 2,631.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.92 : 4,690.58 = 1,906.94 : x
  2. Step 2: Convert to fraction form
    3,398.92/4,690.58 = 1,906.94/x
  3. Step 3: Cross multiply
    3,398.92x = 4,690.58 × 1,906.94
  4. Step 4: Simplify right side
    3,398.92x = 8,944,671.12
  5. Step 5: Solve for x
    x = 8,944,671.12/3,398.92
  6. Step 6: Final answer
    x = 2,631.62

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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.