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Finding the Fourth Proportional to 2,911.36, 4,367.72 and 963.56

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Solution

The fourth proportional to 2,911.36, 4,367.72 and 963.56 is: 1,445.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.36 : 4,367.72 = 963.56 : x
  2. Step 2: Convert to fraction form
    2,911.36/4,367.72 = 963.56/x
  3. Step 3: Cross multiply
    2,911.36x = 4,367.72 × 963.56
  4. Step 4: Simplify right side
    2,911.36x = 4,208,573.61
  5. Step 5: Solve for x
    x = 4,208,573.61/2,911.36
  6. Step 6: Final answer
    x = 1,445.57

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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.