Home / 2,131.97-3,192.05-1,089.73

Finding the Fourth Proportional to 2,131.97, 3,192.05 and 1,089.73

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Solution

The fourth proportional to 2,131.97, 3,192.05 and 1,089.73 is: 1,631.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.97 : 3,192.05 = 1,089.73 : x
  2. Step 2: Convert to fraction form
    2,131.97/3,192.05 = 1,089.73/x
  3. Step 3: Cross multiply
    2,131.97x = 3,192.05 × 1,089.73
  4. Step 4: Simplify right side
    2,131.97x = 3,478,451.24
  5. Step 5: Solve for x
    x = 3,478,451.24/2,131.97
  6. Step 6: Final answer
    x = 1,631.57

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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.