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Finding the Fourth Proportional to 4,997.78, 6,899.67 and 3,008.78

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Solution

The fourth proportional to 4,997.78, 6,899.67 and 3,008.78 is: 4,153.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,997.78 : 6,899.67 = 3,008.78 : x
  2. Step 2: Convert to fraction form
    4,997.78/6,899.67 = 3,008.78/x
  3. Step 3: Cross multiply
    4,997.78x = 6,899.67 × 3,008.78
  4. Step 4: Simplify right side
    4,997.78x = 20,759,589.10
  5. Step 5: Solve for x
    x = 20,759,589.10/4,997.78
  6. Step 6: Final answer
    x = 4,153.76

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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.