Home / 8,680.16-13,020.85-3,486.04

Finding the Fourth Proportional to 8,680.16, 13,020.85 and 3,486.04

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Solution

The fourth proportional to 8,680.16, 13,020.85 and 3,486.04 is: 5,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.16 : 13,020.85 = 3,486.04 : x
  2. Step 2: Convert to fraction form
    8,680.16/13,020.85 = 3,486.04/x
  3. Step 3: Cross multiply
    8,680.16x = 13,020.85 × 3,486.04
  4. Step 4: Simplify right side
    8,680.16x = 45,391,138.83
  5. Step 5: Solve for x
    x = 45,391,138.83/8,680.16
  6. Step 6: Final answer
    x = 5,229.30

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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.