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Finding the Fourth Proportional to 3,101.88, 4,280.04 and 2,768.88

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Solution

The fourth proportional to 3,101.88, 4,280.04 and 2,768.88 is: 3,820.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.88 : 4,280.04 = 2,768.88 : x
  2. Step 2: Convert to fraction form
    3,101.88/4,280.04 = 2,768.88/x
  3. Step 3: Cross multiply
    3,101.88x = 4,280.04 × 2,768.88
  4. Step 4: Simplify right side
    3,101.88x = 11,850,917.16
  5. Step 5: Solve for x
    x = 11,850,917.16/3,101.88
  6. Step 6: Final answer
    x = 3,820.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.