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Finding the Fourth Proportional to 8,680.78, 13,021.17 and 2,441.45

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Solution

The fourth proportional to 8,680.78, 13,021.17 and 2,441.45 is: 3,662.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.78 : 13,021.17 = 2,441.45 : x
  2. Step 2: Convert to fraction form
    8,680.78/13,021.17 = 2,441.45/x
  3. Step 3: Cross multiply
    8,680.78x = 13,021.17 × 2,441.45
  4. Step 4: Simplify right side
    8,680.78x = 31,790,568.05
  5. Step 5: Solve for x
    x = 31,790,568.05/8,680.78
  6. Step 6: Final answer
    x = 3,662.18

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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.