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Finding the Fourth Proportional to 4,906.70, 6,769.72 and 2,781.88

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Solution

The fourth proportional to 4,906.70, 6,769.72 and 2,781.88 is: 3,838.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,906.70 : 6,769.72 = 2,781.88 : x
  2. Step 2: Convert to fraction form
    4,906.70/6,769.72 = 2,781.88/x
  3. Step 3: Cross multiply
    4,906.70x = 6,769.72 × 2,781.88
  4. Step 4: Simplify right side
    4,906.70x = 18,832,548.67
  5. Step 5: Solve for x
    x = 18,832,548.67/4,906.70
  6. Step 6: Final answer
    x = 3,838.13

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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.