Home / 2,820.57-4,231.87-1,260.44

Finding the Fourth Proportional to 2,820.57, 4,231.87 and 1,260.44

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Solution

The fourth proportional to 2,820.57, 4,231.87 and 1,260.44 is: 1,891.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.57 : 4,231.87 = 1,260.44 : x
  2. Step 2: Convert to fraction form
    2,820.57/4,231.87 = 1,260.44/x
  3. Step 3: Cross multiply
    2,820.57x = 4,231.87 × 1,260.44
  4. Step 4: Simplify right side
    2,820.57x = 5,334,025.65
  5. Step 5: Solve for x
    x = 5,334,025.65/2,820.57
  6. Step 6: Final answer
    x = 1,891.12

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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.