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Finding the Fourth Proportional to 7,249.70, 10,872.87 and 3,548.21

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Solution

The fourth proportional to 7,249.70, 10,872.87 and 3,548.21 is: 5,321.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,249.70 : 10,872.87 = 3,548.21 : x
  2. Step 2: Convert to fraction form
    7,249.70/10,872.87 = 3,548.21/x
  3. Step 3: Cross multiply
    7,249.70x = 10,872.87 × 3,548.21
  4. Step 4: Simplify right side
    7,249.70x = 38,579,226.06
  5. Step 5: Solve for x
    x = 38,579,226.06/7,249.70
  6. Step 6: Final answer
    x = 5,321.49

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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.