Home / 3,781.46-5,218.66-2,289.44

Finding the Fourth Proportional to 3,781.46, 5,218.66 and 2,289.44

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Solution

The fourth proportional to 3,781.46, 5,218.66 and 2,289.44 is: 3,159.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.46 : 5,218.66 = 2,289.44 : x
  2. Step 2: Convert to fraction form
    3,781.46/5,218.66 = 2,289.44/x
  3. Step 3: Cross multiply
    3,781.46x = 5,218.66 × 2,289.44
  4. Step 4: Simplify right side
    3,781.46x = 11,947,808.95
  5. Step 5: Solve for x
    x = 11,947,808.95/3,781.46
  6. Step 6: Final answer
    x = 3,159.58

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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.