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Finding the Fourth Proportional to 8,161.62, 11,263.12 and 4,435.62

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Solution

The fourth proportional to 8,161.62, 11,263.12 and 4,435.62 is: 6,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,161.62 : 11,263.12 = 4,435.62 : x
  2. Step 2: Convert to fraction form
    8,161.62/11,263.12 = 4,435.62/x
  3. Step 3: Cross multiply
    8,161.62x = 11,263.12 × 4,435.62
  4. Step 4: Simplify right side
    8,161.62x = 49,958,920.33
  5. Step 5: Solve for x
    x = 49,958,920.33/8,161.62
  6. Step 6: Final answer
    x = 6,121.20

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Half scale
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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.