Home / 3,414.60-5,111.10-2,680.20

Finding the Fourth Proportional to 3,414.60, 5,111.10 and 2,680.20

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Solution

The fourth proportional to 3,414.60, 5,111.10 and 2,680.20 is: 4,011.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,414.60 : 5,111.10 = 2,680.20 : x
  2. Step 2: Convert to fraction form
    3,414.60/5,111.10 = 2,680.20/x
  3. Step 3: Cross multiply
    3,414.60x = 5,111.10 × 2,680.20
  4. Step 4: Simplify right side
    3,414.60x = 13,698,770.22
  5. Step 5: Solve for x
    x = 13,698,770.22/3,414.60
  6. Step 6: Final answer
    x = 4,011.82

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1.5x scale

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.