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Finding the Fourth Proportional to 2,800.22, 3,860.15 and 1,791.81

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Solution

The fourth proportional to 2,800.22, 3,860.15 and 1,791.81 is: 2,470.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.22 : 3,860.15 = 1,791.81 : x
  2. Step 2: Convert to fraction form
    2,800.22/3,860.15 = 1,791.81/x
  3. Step 3: Cross multiply
    2,800.22x = 3,860.15 × 1,791.81
  4. Step 4: Simplify right side
    2,800.22x = 6,916,659.85
  5. Step 5: Solve for x
    x = 6,916,659.85/2,800.22
  6. Step 6: Final answer
    x = 2,470.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.