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Finding the Fourth Proportional to 5,147.50, 7,721.25 and 3,499.96

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Solution

The fourth proportional to 5,147.50, 7,721.25 and 3,499.96 is: 5,249.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.50 : 7,721.25 = 3,499.96 : x
  2. Step 2: Convert to fraction form
    5,147.50/7,721.25 = 3,499.96/x
  3. Step 3: Cross multiply
    5,147.50x = 7,721.25 × 3,499.96
  4. Step 4: Simplify right side
    5,147.50x = 27,024,058.04
  5. Step 5: Solve for x
    x = 27,024,058.04/5,147.50
  6. Step 6: Final answer
    x = 5,249.94

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Double scale
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Similar ratio
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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.