Home / 4,172.20-5,757.65-2,680.13

Finding the Fourth Proportional to 4,172.20, 5,757.65 and 2,680.13

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Solution

The fourth proportional to 4,172.20, 5,757.65 and 2,680.13 is: 3,698.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,172.20 : 5,757.65 = 2,680.13 : x
  2. Step 2: Convert to fraction form
    4,172.20/5,757.65 = 2,680.13/x
  3. Step 3: Cross multiply
    4,172.20x = 5,757.65 × 2,680.13
  4. Step 4: Simplify right side
    4,172.20x = 15,431,239.95
  5. Step 5: Solve for x
    x = 15,431,239.95/4,172.20
  6. Step 6: Final answer
    x = 3,698.59

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1.5x scale

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.