Home / 3,229.83-4,456.94-1,970.78

Finding the Fourth Proportional to 3,229.83, 4,456.94 and 1,970.78

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Solution

The fourth proportional to 3,229.83, 4,456.94 and 1,970.78 is: 2,719.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,229.83 : 4,456.94 = 1,970.78 : x
  2. Step 2: Convert to fraction form
    3,229.83/4,456.94 = 1,970.78/x
  3. Step 3: Cross multiply
    3,229.83x = 4,456.94 × 1,970.78
  4. Step 4: Simplify right side
    3,229.83x = 8,783,616.07
  5. Step 5: Solve for x
    x = 8,783,616.07/3,229.83
  6. Step 6: Final answer
    x = 2,719.53

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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.