Home / 2,620.62-3,930.98-2,098.20

Finding the Fourth Proportional to 2,620.62, 3,930.98 and 2,098.20

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Solution

The fourth proportional to 2,620.62, 3,930.98 and 2,098.20 is: 3,147.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.62 : 3,930.98 = 2,098.20 : x
  2. Step 2: Convert to fraction form
    2,620.62/3,930.98 = 2,098.20/x
  3. Step 3: Cross multiply
    2,620.62x = 3,930.98 × 2,098.20
  4. Step 4: Simplify right side
    2,620.62x = 8,247,962.58
  5. Step 5: Solve for x
    x = 8,247,962.58/2,620.62
  6. Step 6: Final answer
    x = 3,147.33

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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.