Home / 2,207.85-3,311.38-1,285.22

Finding the Fourth Proportional to 2,207.85, 3,311.38 and 1,285.22

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Solution

The fourth proportional to 2,207.85, 3,311.38 and 1,285.22 is: 1,927.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.85 : 3,311.38 = 1,285.22 : x
  2. Step 2: Convert to fraction form
    2,207.85/3,311.38 = 1,285.22/x
  3. Step 3: Cross multiply
    2,207.85x = 3,311.38 × 1,285.22
  4. Step 4: Simplify right side
    2,207.85x = 4,255,828.82
  5. Step 5: Solve for x
    x = 4,255,828.82/2,207.85
  6. Step 6: Final answer
    x = 1,927.59

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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.