Home / 5,149.74-7,106.70-2,791.90

Finding the Fourth Proportional to 5,149.74, 7,106.70 and 2,791.90

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Solution

The fourth proportional to 5,149.74, 7,106.70 and 2,791.90 is: 3,852.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.74 : 7,106.70 = 2,791.90 : x
  2. Step 2: Convert to fraction form
    5,149.74/7,106.70 = 2,791.90/x
  3. Step 3: Cross multiply
    5,149.74x = 7,106.70 × 2,791.90
  4. Step 4: Simplify right side
    5,149.74x = 19,841,195.73
  5. Step 5: Solve for x
    x = 19,841,195.73/5,149.74
  6. Step 6: Final answer
    x = 3,852.85

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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.