Home / 2,821.50-4,229.42-1,178.96

Finding the Fourth Proportional to 2,821.50, 4,229.42 and 1,178.96

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Solution

The fourth proportional to 2,821.50, 4,229.42 and 1,178.96 is: 1,767.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.50 : 4,229.42 = 1,178.96 : x
  2. Step 2: Convert to fraction form
    2,821.50/4,229.42 = 1,178.96/x
  3. Step 3: Cross multiply
    2,821.50x = 4,229.42 × 1,178.96
  4. Step 4: Simplify right side
    2,821.50x = 4,986,289.96
  5. Step 5: Solve for x
    x = 4,986,289.96/2,821.50
  6. Step 6: Final answer
    x = 1,767.25

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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.