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Finding the Fourth Proportional to 4,997.70, 6,896.70 and 2,759.40

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Solution

The fourth proportional to 4,997.70, 6,896.70 and 2,759.40 is: 3,807.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,997.70 : 6,896.70 = 2,759.40 : x
  2. Step 2: Convert to fraction form
    4,997.70/6,896.70 = 2,759.40/x
  3. Step 3: Cross multiply
    4,997.70x = 6,896.70 × 2,759.40
  4. Step 4: Simplify right side
    4,997.70x = 19,030,753.98
  5. Step 5: Solve for x
    x = 19,030,753.98/4,997.70
  6. Step 6: Final answer
    x = 3,807.90

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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.