Home / 11,175.12-16,765.20-3,780

Finding the Fourth Proportional to 11,175.12, 16,765.20 and 3,780

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Solution

The fourth proportional to 11,175.12, 16,765.20 and 3,780 is: 5,670.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,175.12 : 16,765.20 = 3,780 : x
  2. Step 2: Convert to fraction form
    11,175.12/16,765.20 = 3,780/x
  3. Step 3: Cross multiply
    11,175.12x = 16,765.20 × 3,780
  4. Step 4: Simplify right side
    11,175.12x = 63,372,456
  5. Step 5: Solve for x
    x = 63,372,456/11,175.12
  6. Step 6: Final answer
    x = 5,670.85

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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.