Home / 2,768.12-4,142.60-2,608.20

Finding the Fourth Proportional to 2,768.12, 4,142.60 and 2,608.20

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Solution

The fourth proportional to 2,768.12, 4,142.60 and 2,608.20 is: 3,903.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.12 : 4,142.60 = 2,608.20 : x
  2. Step 2: Convert to fraction form
    2,768.12/4,142.60 = 2,608.20/x
  3. Step 3: Cross multiply
    2,768.12x = 4,142.60 × 2,608.20
  4. Step 4: Simplify right side
    2,768.12x = 10,804,729.32
  5. Step 5: Solve for x
    x = 10,804,729.32/2,768.12
  6. Step 6: Final answer
    x = 3,903.27

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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.