Home / 1,979.86-2,732.09-1,095.61

Finding the Fourth Proportional to 1,979.86, 2,732.09 and 1,095.61

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Solution

The fourth proportional to 1,979.86, 2,732.09 and 1,095.61 is: 1,511.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.86 : 2,732.09 = 1,095.61 : x
  2. Step 2: Convert to fraction form
    1,979.86/2,732.09 = 1,095.61/x
  3. Step 3: Cross multiply
    1,979.86x = 2,732.09 × 1,095.61
  4. Step 4: Simplify right side
    1,979.86x = 2,993,292.82
  5. Step 5: Solve for x
    x = 2,993,292.82/1,979.86
  6. Step 6: Final answer
    x = 1,511.87

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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.