Home / 8,680.20-13,020.82-2,440.72

Finding the Fourth Proportional to 8,680.20, 13,020.82 and 2,440.72

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Solution

The fourth proportional to 8,680.20, 13,020.82 and 2,440.72 is: 3,661.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.20 : 13,020.82 = 2,440.72 : x
  2. Step 2: Convert to fraction form
    8,680.20/13,020.82 = 2,440.72/x
  3. Step 3: Cross multiply
    8,680.20x = 13,020.82 × 2,440.72
  4. Step 4: Simplify right side
    8,680.20x = 31,780,175.79
  5. Step 5: Solve for x
    x = 31,780,175.79/8,680.20
  6. Step 6: Final answer
    x = 3,661.23

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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.