Home / 3,691.80-5,536.44-2,131.20

Finding the Fourth Proportional to 3,691.80, 5,536.44 and 2,131.20

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Solution

The fourth proportional to 3,691.80, 5,536.44 and 2,131.20 is: 3,196.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.80 : 5,536.44 = 2,131.20 : x
  2. Step 2: Convert to fraction form
    3,691.80/5,536.44 = 2,131.20/x
  3. Step 3: Cross multiply
    3,691.80x = 5,536.44 × 2,131.20
  4. Step 4: Simplify right side
    3,691.80x = 11,799,260.93
  5. Step 5: Solve for x
    x = 11,799,260.93/3,691.80
  6. Step 6: Final answer
    x = 3,196.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.