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Finding the Fourth Proportional to 9,912.16, 14,882.82 and 4,080.16

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Solution

The fourth proportional to 9,912.16, 14,882.82 and 4,080.16 is: 6,126.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.16 : 14,882.82 = 4,080.16 : x
  2. Step 2: Convert to fraction form
    9,912.16/14,882.82 = 4,080.16/x
  3. Step 3: Cross multiply
    9,912.16x = 14,882.82 × 4,080.16
  4. Step 4: Simplify right side
    9,912.16x = 60,724,286.85
  5. Step 5: Solve for x
    x = 60,724,286.85/9,912.16
  6. Step 6: Final answer
    x = 6,126.24

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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.