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Finding the Fourth Proportional to 2,912, 4,367.56 and 963.96

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Solution

The fourth proportional to 2,912, 4,367.56 and 963.96 is: 1,445.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912 : 4,367.56 = 963.96 : x
  2. Step 2: Convert to fraction form
    2,912/4,367.56 = 963.96/x
  3. Step 3: Cross multiply
    2,912x = 4,367.56 × 963.96
  4. Step 4: Simplify right side
    2,912x = 4,210,153.14
  5. Step 5: Solve for x
    x = 4,210,153.14/2,912
  6. Step 6: Final answer
    x = 1,445.79

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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.