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Finding the Fourth Proportional to 6,463.90, 8,920.02 and 3,669.40

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Solution

The fourth proportional to 6,463.90, 8,920.02 and 3,669.40 is: 5,063.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,463.90 : 8,920.02 = 3,669.40 : x
  2. Step 2: Convert to fraction form
    6,463.90/8,920.02 = 3,669.40/x
  3. Step 3: Cross multiply
    6,463.90x = 8,920.02 × 3,669.40
  4. Step 4: Simplify right side
    6,463.90x = 32,731,121.39
  5. Step 5: Solve for x
    x = 32,731,121.39/6,463.90
  6. Step 6: Final answer
    x = 5,063.68

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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.