Home / 2,821.29-4,229.17-1,178.31

Finding the Fourth Proportional to 2,821.29, 4,229.17 and 1,178.31

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Solution

The fourth proportional to 2,821.29, 4,229.17 and 1,178.31 is: 1,766.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.29 : 4,229.17 = 1,178.31 : x
  2. Step 2: Convert to fraction form
    2,821.29/4,229.17 = 1,178.31/x
  3. Step 3: Cross multiply
    2,821.29x = 4,229.17 × 1,178.31
  4. Step 4: Simplify right side
    2,821.29x = 4,983,258.92
  5. Step 5: Solve for x
    x = 4,983,258.92/2,821.29
  6. Step 6: Final answer
    x = 1,766.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.