Home / 8,680.34-13,021.07-3,486.21

Finding the Fourth Proportional to 8,680.34, 13,021.07 and 3,486.21

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Solution

The fourth proportional to 8,680.34, 13,021.07 and 3,486.21 is: 5,229.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.34 : 13,021.07 = 3,486.21 : x
  2. Step 2: Convert to fraction form
    8,680.34/13,021.07 = 3,486.21/x
  3. Step 3: Cross multiply
    8,680.34x = 13,021.07 × 3,486.21
  4. Step 4: Simplify right side
    8,680.34x = 45,394,167.01
  5. Step 5: Solve for x
    x = 45,394,167.01/8,680.34
  6. Step 6: Final answer
    x = 5,229.54

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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.