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Finding the Fourth Proportional to 7,379.38, 11,083.47 and 7,108.66

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Solution

The fourth proportional to 7,379.38, 11,083.47 and 7,108.66 is: 10,676.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,379.38 : 11,083.47 = 7,108.66 : x
  2. Step 2: Convert to fraction form
    7,379.38/11,083.47 = 7,108.66/x
  3. Step 3: Cross multiply
    7,379.38x = 11,083.47 × 7,108.66
  4. Step 4: Simplify right side
    7,379.38x = 78,788,619.85
  5. Step 5: Solve for x
    x = 78,788,619.85/7,379.38
  6. Step 6: Final answer
    x = 10,676.86

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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.