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Finding the Fourth Proportional to 6,379.05, 8,801.10 and 3,689.94

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Solution

The fourth proportional to 6,379.05, 8,801.10 and 3,689.94 is: 5,090.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379.05 : 8,801.10 = 3,689.94 : x
  2. Step 2: Convert to fraction form
    6,379.05/8,801.10 = 3,689.94/x
  3. Step 3: Cross multiply
    6,379.05x = 8,801.10 × 3,689.94
  4. Step 4: Simplify right side
    6,379.05x = 32,475,530.93
  5. Step 5: Solve for x
    x = 32,475,530.93/6,379.05
  6. Step 6: Final answer
    x = 5,090.97

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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.