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Finding the Fourth Proportional to 3,764.40, 5,194.82 and 2,108.40

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Solution

The fourth proportional to 3,764.40, 5,194.82 and 2,108.40 is: 2,909.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,764.40 : 5,194.82 = 2,108.40 : x
  2. Step 2: Convert to fraction form
    3,764.40/5,194.82 = 2,108.40/x
  3. Step 3: Cross multiply
    3,764.40x = 5,194.82 × 2,108.40
  4. Step 4: Simplify right side
    3,764.40x = 10,952,758.49
  5. Step 5: Solve for x
    x = 10,952,758.49/3,764.40
  6. Step 6: Final answer
    x = 2,909.56

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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.