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Finding the Fourth Proportional to 11,805.20, 17,706.39 and 3,907.73

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Solution

The fourth proportional to 11,805.20, 17,706.39 and 3,907.73 is: 5,861.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,805.20 : 17,706.39 = 3,907.73 : x
  2. Step 2: Convert to fraction form
    11,805.20/17,706.39 = 3,907.73/x
  3. Step 3: Cross multiply
    11,805.20x = 17,706.39 × 3,907.73
  4. Step 4: Simplify right side
    11,805.20x = 69,191,702.86
  5. Step 5: Solve for x
    x = 69,191,702.86/11,805.20
  6. Step 6: Final answer
    x = 5,861.12

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1.5x scale

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.