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Finding the Fourth Proportional to 2,349.24, 3,520.79 and 961.00

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Solution

The fourth proportional to 2,349.24, 3,520.79 and 961.00 is: 1,440.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,349.24 : 3,520.79 = 961.00 : x
  2. Step 2: Convert to fraction form
    2,349.24/3,520.79 = 961.00/x
  3. Step 3: Cross multiply
    2,349.24x = 3,520.79 × 961.00
  4. Step 4: Simplify right side
    2,349.24x = 3,383,471.89
  5. Step 5: Solve for x
    x = 3,383,471.89/2,349.24
  6. Step 6: Final answer
    x = 1,440.24

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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.