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Finding the Fourth Proportional to 6,369.88, 9,553.20 and 4,288.72

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Solution

The fourth proportional to 6,369.88, 9,553.20 and 4,288.72 is: 6,431.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,369.88 : 9,553.20 = 4,288.72 : x
  2. Step 2: Convert to fraction form
    6,369.88/9,553.20 = 4,288.72/x
  3. Step 3: Cross multiply
    6,369.88x = 9,553.20 × 4,288.72
  4. Step 4: Simplify right side
    6,369.88x = 40,970,999.90
  5. Step 5: Solve for x
    x = 40,970,999.90/6,369.88
  6. Step 6: Final answer
    x = 6,431.99

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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.