Home / 2,135.66-3,203.93-1,211.66

Finding the Fourth Proportional to 2,135.66, 3,203.93 and 1,211.66

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Solution

The fourth proportional to 2,135.66, 3,203.93 and 1,211.66 is: 1,817.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.66 : 3,203.93 = 1,211.66 : x
  2. Step 2: Convert to fraction form
    2,135.66/3,203.93 = 1,211.66/x
  3. Step 3: Cross multiply
    2,135.66x = 3,203.93 × 1,211.66
  4. Step 4: Simplify right side
    2,135.66x = 3,882,067.77
  5. Step 5: Solve for x
    x = 3,882,067.77/2,135.66
  6. Step 6: Final answer
    x = 1,817.74

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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.