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Finding the Fourth Proportional to 2,080.83, 3,121.43 and 541.83

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Solution

The fourth proportional to 2,080.83, 3,121.43 and 541.83 is: 812.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.83 : 3,121.43 = 541.83 : x
  2. Step 2: Convert to fraction form
    2,080.83/3,121.43 = 541.83/x
  3. Step 3: Cross multiply
    2,080.83x = 3,121.43 × 541.83
  4. Step 4: Simplify right side
    2,080.83x = 1,691,281.71
  5. Step 5: Solve for x
    x = 1,691,281.71/2,080.83
  6. Step 6: Final answer
    x = 812.79

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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.