Home / 8,680.70-13,021.07-3,137.96

Finding the Fourth Proportional to 8,680.70, 13,021.07 and 3,137.96

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Solution

The fourth proportional to 8,680.70, 13,021.07 and 3,137.96 is: 4,706.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.70 : 13,021.07 = 3,137.96 : x
  2. Step 2: Convert to fraction form
    8,680.70/13,021.07 = 3,137.96/x
  3. Step 3: Cross multiply
    8,680.70x = 13,021.07 × 3,137.96
  4. Step 4: Simplify right side
    8,680.70x = 40,859,516.02
  5. Step 5: Solve for x
    x = 40,859,516.02/8,680.70
  6. Step 6: Final answer
    x = 4,706.94

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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.