Home / 1,979.12-2,961.42-1,196.24

Finding the Fourth Proportional to 1,979.12, 2,961.42 and 1,196.24

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Solution

The fourth proportional to 1,979.12, 2,961.42 and 1,196.24 is: 1,789.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.12 : 2,961.42 = 1,196.24 : x
  2. Step 2: Convert to fraction form
    1,979.12/2,961.42 = 1,196.24/x
  3. Step 3: Cross multiply
    1,979.12x = 2,961.42 × 1,196.24
  4. Step 4: Simplify right side
    1,979.12x = 3,542,569.06
  5. Step 5: Solve for x
    x = 3,542,569.06/1,979.12
  6. Step 6: Final answer
    x = 1,789.97

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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.