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Finding the Fourth Proportional to 8,118.62, 11,203.64 and 4,392.62

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Solution

The fourth proportional to 8,118.62, 11,203.64 and 4,392.62 is: 6,061.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.62 : 11,203.64 = 4,392.62 : x
  2. Step 2: Convert to fraction form
    8,118.62/11,203.64 = 4,392.62/x
  3. Step 3: Cross multiply
    8,118.62x = 11,203.64 × 4,392.62
  4. Step 4: Simplify right side
    8,118.62x = 49,213,333.14
  5. Step 5: Solve for x
    x = 49,213,333.14/8,118.62
  6. Step 6: Final answer
    x = 6,061.79

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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.