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Finding the Fourth Proportional to 8,774.93, 12,105.77 and 6,379.65

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Solution

The fourth proportional to 8,774.93, 12,105.77 and 6,379.65 is: 8,801.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,774.93 : 12,105.77 = 6,379.65 : x
  2. Step 2: Convert to fraction form
    8,774.93/12,105.77 = 6,379.65/x
  3. Step 3: Cross multiply
    8,774.93x = 12,105.77 × 6,379.65
  4. Step 4: Simplify right side
    8,774.93x = 77,230,575.58
  5. Step 5: Solve for x
    x = 77,230,575.58/8,774.93
  6. Step 6: Final answer
    x = 8,801.28

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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.