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Finding the Fourth Proportional to 6,463.69, 8,919.90 and 3,669.19

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Solution

The fourth proportional to 6,463.69, 8,919.90 and 3,669.19 is: 5,063.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,463.69 : 8,919.90 = 3,669.19 : x
  2. Step 2: Convert to fraction form
    6,463.69/8,919.90 = 3,669.19/x
  3. Step 3: Cross multiply
    6,463.69x = 8,919.90 × 3,669.19
  4. Step 4: Simplify right side
    6,463.69x = 32,728,785.58
  5. Step 5: Solve for x
    x = 32,728,785.58/6,463.69
  6. Step 6: Final answer
    x = 5,063.49

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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.