Home / 1,691.27-2,536.91-1,109.95

Finding the Fourth Proportional to 1,691.27, 2,536.91 and 1,109.95

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Solution

The fourth proportional to 1,691.27, 2,536.91 and 1,109.95 is: 1,664.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.27 : 2,536.91 = 1,109.95 : x
  2. Step 2: Convert to fraction form
    1,691.27/2,536.91 = 1,109.95/x
  3. Step 3: Cross multiply
    1,691.27x = 2,536.91 × 1,109.95
  4. Step 4: Simplify right side
    1,691.27x = 2,815,843.25
  5. Step 5: Solve for x
    x = 2,815,843.25/1,691.27
  6. Step 6: Final answer
    x = 1,664.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.