Home / 2,979.96-4,115.33-1,932.63

Finding the Fourth Proportional to 2,979.96, 4,115.33 and 1,932.63

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Solution

The fourth proportional to 2,979.96, 4,115.33 and 1,932.63 is: 2,668.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.96 : 4,115.33 = 1,932.63 : x
  2. Step 2: Convert to fraction form
    2,979.96/4,115.33 = 1,932.63/x
  3. Step 3: Cross multiply
    2,979.96x = 4,115.33 × 1,932.63
  4. Step 4: Simplify right side
    2,979.96x = 7,953,410.22
  5. Step 5: Solve for x
    x = 7,953,410.22/2,979.96
  6. Step 6: Final answer
    x = 2,668.97

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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.