Home / 1,691.25-2,536.88-1,109.93

Finding the Fourth Proportional to 1,691.25, 2,536.88 and 1,109.93

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Solution

The fourth proportional to 1,691.25, 2,536.88 and 1,109.93 is: 1,664.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.25 : 2,536.88 = 1,109.93 : x
  2. Step 2: Convert to fraction form
    1,691.25/2,536.88 = 1,109.93/x
  3. Step 3: Cross multiply
    1,691.25x = 2,536.88 × 1,109.93
  4. Step 4: Simplify right side
    1,691.25x = 2,815,764.17
  5. Step 5: Solve for x
    x = 2,815,764.17/1,691.25
  6. Step 6: Final answer
    x = 1,664.90

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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.