Home / 8,178.42-12,267.96-2,255.79

Finding the Fourth Proportional to 8,178.42, 12,267.96 and 2,255.79

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Solution

The fourth proportional to 8,178.42, 12,267.96 and 2,255.79 is: 3,383.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.42 : 12,267.96 = 2,255.79 : x
  2. Step 2: Convert to fraction form
    8,178.42/12,267.96 = 2,255.79/x
  3. Step 3: Cross multiply
    8,178.42x = 12,267.96 × 2,255.79
  4. Step 4: Simplify right side
    8,178.42x = 27,673,941.49
  5. Step 5: Solve for x
    x = 27,673,941.49/8,178.42
  6. Step 6: Final answer
    x = 3,383.78

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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.