Home / 2,207.94-3,311.91-1,111.20

Finding the Fourth Proportional to 2,207.94, 3,311.91 and 1,111.20

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Solution

The fourth proportional to 2,207.94, 3,311.91 and 1,111.20 is: 1,666.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.94 : 3,311.91 = 1,111.20 : x
  2. Step 2: Convert to fraction form
    2,207.94/3,311.91 = 1,111.20/x
  3. Step 3: Cross multiply
    2,207.94x = 3,311.91 × 1,111.20
  4. Step 4: Simplify right side
    2,207.94x = 3,680,194.39
  5. Step 5: Solve for x
    x = 3,680,194.39/2,207.94
  6. Step 6: Final answer
    x = 1,666.80

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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.