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Finding the Fourth Proportional to 6,463.20, 8,919.16 and 3,944.78

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Solution

The fourth proportional to 6,463.20, 8,919.16 and 3,944.78 is: 5,443.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,463.20 : 8,919.16 = 3,944.78 : x
  2. Step 2: Convert to fraction form
    6,463.20/8,919.16 = 3,944.78/x
  3. Step 3: Cross multiply
    6,463.20x = 8,919.16 × 3,944.78
  4. Step 4: Simplify right side
    6,463.20x = 35,184,123.98
  5. Step 5: Solve for x
    x = 35,184,123.98/6,463.20
  6. Step 6: Final answer
    x = 5,443.76

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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.