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Finding the Fourth Proportional to 2,695.56, 4,043.70 and 963.78

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Solution

The fourth proportional to 2,695.56, 4,043.70 and 963.78 is: 1,445.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.56 : 4,043.70 = 963.78 : x
  2. Step 2: Convert to fraction form
    2,695.56/4,043.70 = 963.78/x
  3. Step 3: Cross multiply
    2,695.56x = 4,043.70 × 963.78
  4. Step 4: Simplify right side
    2,695.56x = 3,897,237.19
  5. Step 5: Solve for x
    x = 3,897,237.19/2,695.56
  6. Step 6: Final answer
    x = 1,445.80

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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.