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Finding the Fourth Proportional to 6,790.72, 9,372 and 4,439.68

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Solution

The fourth proportional to 6,790.72, 9,372 and 4,439.68 is: 6,127.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,790.72 : 9,372 = 4,439.68 : x
  2. Step 2: Convert to fraction form
    6,790.72/9,372 = 4,439.68/x
  3. Step 3: Cross multiply
    6,790.72x = 9,372 × 4,439.68
  4. Step 4: Simplify right side
    6,790.72x = 41,608,680.96
  5. Step 5: Solve for x
    x = 41,608,680.96/6,790.72
  6. Step 6: Final answer
    x = 6,127.29

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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.