Home / 3,689.82-5,091.53-2,197.80

Finding the Fourth Proportional to 3,689.82, 5,091.53 and 2,197.80

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Solution

The fourth proportional to 3,689.82, 5,091.53 and 2,197.80 is: 3,032.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.82 : 5,091.53 = 2,197.80 : x
  2. Step 2: Convert to fraction form
    3,689.82/5,091.53 = 2,197.80/x
  3. Step 3: Cross multiply
    3,689.82x = 5,091.53 × 2,197.80
  4. Step 4: Simplify right side
    3,689.82x = 11,190,153.65
  5. Step 5: Solve for x
    x = 11,190,153.65/3,689.82
  6. Step 6: Final answer
    x = 3,032.71

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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.