Home / 3,680.80-5,079.46-2,108.88

Finding the Fourth Proportional to 3,680.80, 5,079.46 and 2,108.88

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Solution

The fourth proportional to 3,680.80, 5,079.46 and 2,108.88 is: 2,910.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.80 : 5,079.46 = 2,108.88 : x
  2. Step 2: Convert to fraction form
    3,680.80/5,079.46 = 2,108.88/x
  3. Step 3: Cross multiply
    3,680.80x = 5,079.46 × 2,108.88
  4. Step 4: Simplify right side
    3,680.80x = 10,711,971.60
  5. Step 5: Solve for x
    x = 10,711,971.60/3,680.80
  6. Step 6: Final answer
    x = 2,910.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.