Home / 1,979.52-2,731.92-1,095.42

Finding the Fourth Proportional to 1,979.52, 2,731.92 and 1,095.42

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Solution

The fourth proportional to 1,979.52, 2,731.92 and 1,095.42 is: 1,511.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.52 : 2,731.92 = 1,095.42 : x
  2. Step 2: Convert to fraction form
    1,979.52/2,731.92 = 1,095.42/x
  3. Step 3: Cross multiply
    1,979.52x = 2,731.92 × 1,095.42
  4. Step 4: Simplify right side
    1,979.52x = 2,992,599.81
  5. Step 5: Solve for x
    x = 2,992,599.81/1,979.52
  6. Step 6: Final answer
    x = 1,511.78

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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.