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Finding the Fourth Proportional to 3,768.72, 5,653.07 and 2,126.64

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Solution

The fourth proportional to 3,768.72, 5,653.07 and 2,126.64 is: 3,189.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,768.72 : 5,653.07 = 2,126.64 : x
  2. Step 2: Convert to fraction form
    3,768.72/5,653.07 = 2,126.64/x
  3. Step 3: Cross multiply
    3,768.72x = 5,653.07 × 2,126.64
  4. Step 4: Simplify right side
    3,768.72x = 12,022,044.78
  5. Step 5: Solve for x
    x = 12,022,044.78/3,768.72
  6. Step 6: Final answer
    x = 3,189.95

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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.