Home / 2,720.34-4,074.59-1,680.61

Finding the Fourth Proportional to 2,720.34, 4,074.59 and 1,680.61

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Solution

The fourth proportional to 2,720.34, 4,074.59 and 1,680.61 is: 2,517.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.34 : 4,074.59 = 1,680.61 : x
  2. Step 2: Convert to fraction form
    2,720.34/4,074.59 = 1,680.61/x
  3. Step 3: Cross multiply
    2,720.34x = 4,074.59 × 1,680.61
  4. Step 4: Simplify right side
    2,720.34x = 6,847,796.70
  5. Step 5: Solve for x
    x = 6,847,796.70/2,720.34
  6. Step 6: Final answer
    x = 2,517.26

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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.