Home / 8,261.49-11,385.11-8,109.65

Finding the Fourth Proportional to 8,261.49, 11,385.11 and 8,109.65

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Solution

The fourth proportional to 8,261.49, 11,385.11 and 8,109.65 is: 11,175.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.49 : 11,385.11 = 8,109.65 : x
  2. Step 2: Convert to fraction form
    8,261.49/11,385.11 = 8,109.65/x
  3. Step 3: Cross multiply
    8,261.49x = 11,385.11 × 8,109.65
  4. Step 4: Simplify right side
    8,261.49x = 92,329,245.23
  5. Step 5: Solve for x
    x = 92,329,245.23/8,261.49
  6. Step 6: Final answer
    x = 11,175.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.