Home / 2,789.16-3,845.52-1,979.88

Finding the Fourth Proportional to 2,789.16, 3,845.52 and 1,979.88

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Solution

The fourth proportional to 2,789.16, 3,845.52 and 1,979.88 is: 2,729.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.16 : 3,845.52 = 1,979.88 : x
  2. Step 2: Convert to fraction form
    2,789.16/3,845.52 = 1,979.88/x
  3. Step 3: Cross multiply
    2,789.16x = 3,845.52 × 1,979.88
  4. Step 4: Simplify right side
    2,789.16x = 7,613,668.14
  5. Step 5: Solve for x
    x = 7,613,668.14/2,789.16
  6. Step 6: Final answer
    x = 2,729.74

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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.