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Finding the Fourth Proportional to 2,601.85, 3,908.22 and 2,211.79

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Solution

The fourth proportional to 2,601.85, 3,908.22 and 2,211.79 is: 3,322.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,601.85 : 3,908.22 = 2,211.79 : x
  2. Step 2: Convert to fraction form
    2,601.85/3,908.22 = 2,211.79/x
  3. Step 3: Cross multiply
    2,601.85x = 3,908.22 × 2,211.79
  4. Step 4: Simplify right side
    2,601.85x = 8,644,161.91
  5. Step 5: Solve for x
    x = 8,644,161.91/2,601.85
  6. Step 6: Final answer
    x = 3,322.31

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1.5x scale

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.