Home / 2,162.26-3,243.40-1,187.82

Finding the Fourth Proportional to 2,162.26, 3,243.40 and 1,187.82

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Solution

The fourth proportional to 2,162.26, 3,243.40 and 1,187.82 is: 1,781.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,162.26 : 3,243.40 = 1,187.82 : x
  2. Step 2: Convert to fraction form
    2,162.26/3,243.40 = 1,187.82/x
  3. Step 3: Cross multiply
    2,162.26x = 3,243.40 × 1,187.82
  4. Step 4: Simplify right side
    2,162.26x = 3,852,575.39
  5. Step 5: Solve for x
    x = 3,852,575.39/2,162.26
  6. Step 6: Final answer
    x = 1,781.74

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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.