Home / 5,149.08-7,105.68-2,791.18

Finding the Fourth Proportional to 5,149.08, 7,105.68 and 2,791.18

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Solution

The fourth proportional to 5,149.08, 7,105.68 and 2,791.18 is: 3,851.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.08 : 7,105.68 = 2,791.18 : x
  2. Step 2: Convert to fraction form
    5,149.08/7,105.68 = 2,791.18/x
  3. Step 3: Cross multiply
    5,149.08x = 7,105.68 × 2,791.18
  4. Step 4: Simplify right side
    5,149.08x = 19,833,231.90
  5. Step 5: Solve for x
    x = 19,833,231.90/5,149.08
  6. Step 6: Final answer
    x = 3,851.80

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1.5x scale

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.