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Finding the Fourth Proportional to 2,909.52, 4,361.76 and 960.48

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Solution

The fourth proportional to 2,909.52, 4,361.76 and 960.48 is: 1,439.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.52 : 4,361.76 = 960.48 : x
  2. Step 2: Convert to fraction form
    2,909.52/4,361.76 = 960.48/x
  3. Step 3: Cross multiply
    2,909.52x = 4,361.76 × 960.48
  4. Step 4: Simplify right side
    2,909.52x = 4,189,383.24
  5. Step 5: Solve for x
    x = 4,189,383.24/2,909.52
  6. Step 6: Final answer
    x = 1,439.89

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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.