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Finding the Fourth Proportional to 6,433.32, 8,874.18 and 3,945

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Solution

The fourth proportional to 6,433.32, 8,874.18 and 3,945 is: 5,441.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,433.32 : 8,874.18 = 3,945 : x
  2. Step 2: Convert to fraction form
    6,433.32/8,874.18 = 3,945/x
  3. Step 3: Cross multiply
    6,433.32x = 8,874.18 × 3,945
  4. Step 4: Simplify right side
    6,433.32x = 35,008,640.10
  5. Step 5: Solve for x
    x = 35,008,640.10/6,433.32
  6. Step 6: Final answer
    x = 5,441.77

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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.