Home / 2,135.91-3,204.30-1,211.91

Finding the Fourth Proportional to 2,135.91, 3,204.30 and 1,211.91

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Solution

The fourth proportional to 2,135.91, 3,204.30 and 1,211.91 is: 1,818.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.91 : 3,204.30 = 1,211.91 : x
  2. Step 2: Convert to fraction form
    2,135.91/3,204.30 = 1,211.91/x
  3. Step 3: Cross multiply
    2,135.91x = 3,204.30 × 1,211.91
  4. Step 4: Simplify right side
    2,135.91x = 3,883,323.21
  5. Step 5: Solve for x
    x = 3,883,323.21/2,135.91
  6. Step 6: Final answer
    x = 1,818.11

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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.