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Finding the Fourth Proportional to 7,156.88, 10,722 and 4,226.48

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Solution

The fourth proportional to 7,156.88, 10,722 and 4,226.48 is: 6,331.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,156.88 : 10,722 = 4,226.48 : x
  2. Step 2: Convert to fraction form
    7,156.88/10,722 = 4,226.48/x
  3. Step 3: Cross multiply
    7,156.88x = 10,722 × 4,226.48
  4. Step 4: Simplify right side
    7,156.88x = 45,316,318.56
  5. Step 5: Solve for x
    x = 45,316,318.56/7,156.88
  6. Step 6: Final answer
    x = 6,331.85

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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.