Home / 2,180.68-3,009.38-1,249.16

Finding the Fourth Proportional to 2,180.68, 3,009.38 and 1,249.16

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Solution

The fourth proportional to 2,180.68, 3,009.38 and 1,249.16 is: 1,723.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.68 : 3,009.38 = 1,249.16 : x
  2. Step 2: Convert to fraction form
    2,180.68/3,009.38 = 1,249.16/x
  3. Step 3: Cross multiply
    2,180.68x = 3,009.38 × 1,249.16
  4. Step 4: Simplify right side
    2,180.68x = 3,759,197.12
  5. Step 5: Solve for x
    x = 3,759,197.12/2,180.68
  6. Step 6: Final answer
    x = 1,723.86

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Half scale
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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.