Home / 3,398.50-4,689.90-1,906.54

Finding the Fourth Proportional to 3,398.50, 4,689.90 and 1,906.54

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Solution

The fourth proportional to 3,398.50, 4,689.90 and 1,906.54 is: 2,631.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.50 : 4,689.90 = 1,906.54 : x
  2. Step 2: Convert to fraction form
    3,398.50/4,689.90 = 1,906.54/x
  3. Step 3: Cross multiply
    3,398.50x = 4,689.90 × 1,906.54
  4. Step 4: Simplify right side
    3,398.50x = 8,941,481.95
  5. Step 5: Solve for x
    x = 8,941,481.95/3,398.50
  6. Step 6: Final answer
    x = 2,631.01

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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.