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Finding the Fourth Proportional to 3,560.43, 5,340.75 and 963.39

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Solution

The fourth proportional to 3,560.43, 5,340.75 and 963.39 is: 1,445.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,560.43 : 5,340.75 = 963.39 : x
  2. Step 2: Convert to fraction form
    3,560.43/5,340.75 = 963.39/x
  3. Step 3: Cross multiply
    3,560.43x = 5,340.75 × 963.39
  4. Step 4: Simplify right side
    3,560.43x = 5,145,225.14
  5. Step 5: Solve for x
    x = 5,145,225.14/3,560.43
  6. Step 6: Final answer
    x = 1,445.11

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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.