Home / 1,979.94-2,732.25-1,095.78

Finding the Fourth Proportional to 1,979.94, 2,732.25 and 1,095.78

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Solution

The fourth proportional to 1,979.94, 2,732.25 and 1,095.78 is: 1,512.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.94 : 2,732.25 = 1,095.78 : x
  2. Step 2: Convert to fraction form
    1,979.94/2,732.25 = 1,095.78/x
  3. Step 3: Cross multiply
    1,979.94x = 2,732.25 × 1,095.78
  4. Step 4: Simplify right side
    1,979.94x = 2,993,944.91
  5. Step 5: Solve for x
    x = 2,993,944.91/1,979.94
  6. Step 6: Final answer
    x = 1,512.14

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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.