Home / 6,800.40-10,201.55-2,120.76

Finding the Fourth Proportional to 6,800.40, 10,201.55 and 2,120.76

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Solution

The fourth proportional to 6,800.40, 10,201.55 and 2,120.76 is: 3,181.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,800.40 : 10,201.55 = 2,120.76 : x
  2. Step 2: Convert to fraction form
    6,800.40/10,201.55 = 2,120.76/x
  3. Step 3: Cross multiply
    6,800.40x = 10,201.55 × 2,120.76
  4. Step 4: Simplify right side
    6,800.40x = 21,635,028.57
  5. Step 5: Solve for x
    x = 21,635,028.57/6,800.40
  6. Step 6: Final answer
    x = 3,181.43

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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.