Home / 8,964.62-13,446.94-3,121.28

Finding the Fourth Proportional to 8,964.62, 13,446.94 and 3,121.28

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Solution

The fourth proportional to 8,964.62, 13,446.94 and 3,121.28 is: 4,681.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,964.62 : 13,446.94 = 3,121.28 : x
  2. Step 2: Convert to fraction form
    8,964.62/13,446.94 = 3,121.28/x
  3. Step 3: Cross multiply
    8,964.62x = 13,446.94 × 3,121.28
  4. Step 4: Simplify right side
    8,964.62x = 41,971,664.88
  5. Step 5: Solve for x
    x = 41,971,664.88/8,964.62
  6. Step 6: Final answer
    x = 4,681.92

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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.