Home / 8,215.56-12,321.96-3,771.87

Finding the Fourth Proportional to 8,215.56, 12,321.96 and 3,771.87

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Solution

The fourth proportional to 8,215.56, 12,321.96 and 3,771.87 is: 5,657.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.56 : 12,321.96 = 3,771.87 : x
  2. Step 2: Convert to fraction form
    8,215.56/12,321.96 = 3,771.87/x
  3. Step 3: Cross multiply
    8,215.56x = 12,321.96 × 3,771.87
  4. Step 4: Simplify right side
    8,215.56x = 46,476,770.91
  5. Step 5: Solve for x
    x = 46,476,770.91/8,215.56
  6. Step 6: Final answer
    x = 5,657.16

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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.