Home / 8,680.64-13,020.86-2,106.82

Finding the Fourth Proportional to 8,680.64, 13,020.86 and 2,106.82

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Solution

The fourth proportional to 8,680.64, 13,020.86 and 2,106.82 is: 3,160.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.64 : 13,020.86 = 2,106.82 : x
  2. Step 2: Convert to fraction form
    8,680.64/13,020.86 = 2,106.82/x
  3. Step 3: Cross multiply
    8,680.64x = 13,020.86 × 2,106.82
  4. Step 4: Simplify right side
    8,680.64x = 27,432,608.27
  5. Step 5: Solve for x
    x = 27,432,608.27/8,680.64
  6. Step 6: Final answer
    x = 3,160.21

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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.