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Finding the Fourth Proportional to 6,628.40, 9,945.30 and 3,342.44

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Solution

The fourth proportional to 6,628.40, 9,945.30 and 3,342.44 is: 5,015.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,628.40 : 9,945.30 = 3,342.44 : x
  2. Step 2: Convert to fraction form
    6,628.40/9,945.30 = 3,342.44/x
  3. Step 3: Cross multiply
    6,628.40x = 9,945.30 × 3,342.44
  4. Step 4: Simplify right side
    6,628.40x = 33,241,568.53
  5. Step 5: Solve for x
    x = 33,241,568.53/6,628.40
  6. Step 6: Final answer
    x = 5,015.02

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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.