Home / 1,245.27-1,717.49-1,161.44

Finding the Fourth Proportional to 1,245.27, 1,717.49 and 1,161.44

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Solution

The fourth proportional to 1,245.27, 1,717.49 and 1,161.44 is: 1,601.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.27 : 1,717.49 = 1,161.44 : x
  2. Step 2: Convert to fraction form
    1,245.27/1,717.49 = 1,161.44/x
  3. Step 3: Cross multiply
    1,245.27x = 1,717.49 × 1,161.44
  4. Step 4: Simplify right side
    1,245.27x = 1,994,747.19
  5. Step 5: Solve for x
    x = 1,994,747.19/1,245.27
  6. Step 6: Final answer
    x = 1,601.86

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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.