Home / 1,979.90-2,732.18-1,095.68

Finding the Fourth Proportional to 1,979.90, 2,732.18 and 1,095.68

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Solution

The fourth proportional to 1,979.90, 2,732.18 and 1,095.68 is: 1,511.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.90 : 2,732.18 = 1,095.68 : x
  2. Step 2: Convert to fraction form
    1,979.90/2,732.18 = 1,095.68/x
  3. Step 3: Cross multiply
    1,979.90x = 2,732.18 × 1,095.68
  4. Step 4: Simplify right side
    1,979.90x = 2,993,575.84
  5. Step 5: Solve for x
    x = 2,993,575.84/1,979.90
  6. Step 6: Final answer
    x = 1,511.99

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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.