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Finding the Fourth Proportional to 8,608.78, 11,880.12 and 4,882.78

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Solution

The fourth proportional to 8,608.78, 11,880.12 and 4,882.78 is: 6,738.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.78 : 11,880.12 = 4,882.78 : x
  2. Step 2: Convert to fraction form
    8,608.78/11,880.12 = 4,882.78/x
  3. Step 3: Cross multiply
    8,608.78x = 11,880.12 × 4,882.78
  4. Step 4: Simplify right side
    8,608.78x = 58,008,018.03
  5. Step 5: Solve for x
    x = 58,008,018.03/8,608.78
  6. Step 6: Final answer
    x = 6,738.24

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Double 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.