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Finding the Fourth Proportional to 4,997.70, 6,893.78 and 2,979.78

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Solution

The fourth proportional to 4,997.70, 6,893.78 and 2,979.78 is: 4,110.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,997.70 : 6,893.78 = 2,979.78 : x
  2. Step 2: Convert to fraction form
    4,997.70/6,893.78 = 2,979.78/x
  3. Step 3: Cross multiply
    4,997.70x = 6,893.78 × 2,979.78
  4. Step 4: Simplify right side
    4,997.70x = 20,541,932.87
  5. Step 5: Solve for x
    x = 20,541,932.87/4,997.70
  6. Step 6: Final answer
    x = 4,110.28

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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.