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Finding the Fourth Proportional to 6,896.40, 10,338.80 and 2,997.88

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Solution

The fourth proportional to 6,896.40, 10,338.80 and 2,997.88 is: 4,494.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,896.40 : 10,338.80 = 2,997.88 : x
  2. Step 2: Convert to fraction form
    6,896.40/10,338.80 = 2,997.88/x
  3. Step 3: Cross multiply
    6,896.40x = 10,338.80 × 2,997.88
  4. Step 4: Simplify right side
    6,896.40x = 30,994,481.74
  5. Step 5: Solve for x
    x = 30,994,481.74/6,896.40
  6. Step 6: Final answer
    x = 4,494.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.