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Finding the Fourth Proportional to 5,553.84, 7,651.11 and 3,872.20

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Solution

The fourth proportional to 5,553.84, 7,651.11 and 3,872.20 is: 5,334.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,553.84 : 7,651.11 = 3,872.20 : x
  2. Step 2: Convert to fraction form
    5,553.84/7,651.11 = 3,872.20/x
  3. Step 3: Cross multiply
    5,553.84x = 7,651.11 × 3,872.20
  4. Step 4: Simplify right side
    5,553.84x = 29,626,628.14
  5. Step 5: Solve for x
    x = 29,626,628.14/5,553.84
  6. Step 6: Final answer
    x = 5,334.44

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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.