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Finding the Fourth Proportional to 6,626.28, 9,936.96 and 1,945

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Solution

The fourth proportional to 6,626.28, 9,936.96 and 1,945 is: 2,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,626.28 : 9,936.96 = 1,945 : x
  2. Step 2: Convert to fraction form
    6,626.28/9,936.96 = 1,945/x
  3. Step 3: Cross multiply
    6,626.28x = 9,936.96 × 1,945
  4. Step 4: Simplify right side
    6,626.28x = 19,327,387.20
  5. Step 5: Solve for x
    x = 19,327,387.20/6,626.28
  6. Step 6: Final answer
    x = 2,916.78

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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.