Home / 3,122.73-4,310.15-1,945.17

Finding the Fourth Proportional to 3,122.73, 4,310.15 and 1,945.17

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Solution

The fourth proportional to 3,122.73, 4,310.15 and 1,945.17 is: 2,684.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.73 : 4,310.15 = 1,945.17 : x
  2. Step 2: Convert to fraction form
    3,122.73/4,310.15 = 1,945.17/x
  3. Step 3: Cross multiply
    3,122.73x = 4,310.15 × 1,945.17
  4. Step 4: Simplify right side
    3,122.73x = 8,383,964.75
  5. Step 5: Solve for x
    x = 8,383,964.75/3,122.73
  6. Step 6: Final answer
    x = 2,684.82

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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.