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Finding the Fourth Proportional to 8,115.08, 11,198.78 and 4,389.08

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Solution

The fourth proportional to 8,115.08, 11,198.78 and 4,389.08 is: 6,056.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.08 : 11,198.78 = 4,389.08 : x
  2. Step 2: Convert to fraction form
    8,115.08/11,198.78 = 4,389.08/x
  3. Step 3: Cross multiply
    8,115.08x = 11,198.78 × 4,389.08
  4. Step 4: Simplify right side
    8,115.08x = 49,152,341.32
  5. Step 5: Solve for x
    x = 49,152,341.32/8,115.08
  6. Step 6: Final answer
    x = 6,056.91

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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.