Home / 8,105.10-12,157.70-2,261.76

Finding the Fourth Proportional to 8,105.10, 12,157.70 and 2,261.76

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Solution

The fourth proportional to 8,105.10, 12,157.70 and 2,261.76 is: 3,392.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.10 : 12,157.70 = 2,261.76 : x
  2. Step 2: Convert to fraction form
    8,105.10/12,157.70 = 2,261.76/x
  3. Step 3: Cross multiply
    8,105.10x = 12,157.70 × 2,261.76
  4. Step 4: Simplify right side
    8,105.10x = 27,497,742.65
  5. Step 5: Solve for x
    x = 27,497,742.65/8,105.10
  6. Step 6: Final answer
    x = 3,392.65

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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.