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Finding the Fourth Proportional to 3,809.22, 5,713.80 and 2,890.42

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Solution

The fourth proportional to 3,809.22, 5,713.80 and 2,890.42 is: 4,335.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.22 : 5,713.80 = 2,890.42 : x
  2. Step 2: Convert to fraction form
    3,809.22/5,713.80 = 2,890.42/x
  3. Step 3: Cross multiply
    3,809.22x = 5,713.80 × 2,890.42
  4. Step 4: Simplify right side
    3,809.22x = 16,515,281.80
  5. Step 5: Solve for x
    x = 16,515,281.80/3,809.22
  6. Step 6: Final answer
    x = 4,335.61

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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.