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Finding the Fourth Proportional to 8,879.77, 13,334.78 and 8,508.25

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Solution

The fourth proportional to 8,879.77, 13,334.78 and 8,508.25 is: 12,776.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.77 : 13,334.78 = 8,508.25 : x
  2. Step 2: Convert to fraction form
    8,879.77/13,334.78 = 8,508.25/x
  3. Step 3: Cross multiply
    8,879.77x = 13,334.78 × 8,508.25
  4. Step 4: Simplify right side
    8,879.77x = 113,455,641.94
  5. Step 5: Solve for x
    x = 113,455,641.94/8,879.77
  6. Step 6: Final answer
    x = 12,776.87

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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.