Home / 2,821.24-4,230.55-1,176.80

Finding the Fourth Proportional to 2,821.24, 4,230.55 and 1,176.80

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Solution

The fourth proportional to 2,821.24, 4,230.55 and 1,176.80 is: 1,764.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.24 : 4,230.55 = 1,176.80 : x
  2. Step 2: Convert to fraction form
    2,821.24/4,230.55 = 1,176.80/x
  3. Step 3: Cross multiply
    2,821.24x = 4,230.55 × 1,176.80
  4. Step 4: Simplify right side
    2,821.24x = 4,978,511.24
  5. Step 5: Solve for x
    x = 4,978,511.24/2,821.24
  6. Step 6: Final answer
    x = 1,764.65

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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.