Home / 6,800.28-10,199.98-2,120.20

Finding the Fourth Proportional to 6,800.28, 10,199.98 and 2,120.20

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Solution

The fourth proportional to 6,800.28, 10,199.98 and 2,120.20 is: 3,180.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,800.28 : 10,199.98 = 2,120.20 : x
  2. Step 2: Convert to fraction form
    6,800.28/10,199.98 = 2,120.20/x
  3. Step 3: Cross multiply
    6,800.28x = 10,199.98 × 2,120.20
  4. Step 4: Simplify right side
    6,800.28x = 21,625,997.60
  5. Step 5: Solve for x
    x = 21,625,997.60/6,800.28
  6. Step 6: Final answer
    x = 3,180.16

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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.