Home / 2,181.30-3,010.17-1,249.80

Finding the Fourth Proportional to 2,181.30, 3,010.17 and 1,249.80

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Solution

The fourth proportional to 2,181.30, 3,010.17 and 1,249.80 is: 1,724.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.30 : 3,010.17 = 1,249.80 : x
  2. Step 2: Convert to fraction form
    2,181.30/3,010.17 = 1,249.80/x
  3. Step 3: Cross multiply
    2,181.30x = 3,010.17 × 1,249.80
  4. Step 4: Simplify right side
    2,181.30x = 3,762,110.47
  5. Step 5: Solve for x
    x = 3,762,110.47/2,181.30
  6. Step 6: Final answer
    x = 1,724.71

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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.