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Finding the Fourth Proportional to 5,859.40, 8,789.54 and 1,963.80

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Solution

The fourth proportional to 5,859.40, 8,789.54 and 1,963.80 is: 2,945.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,859.40 : 8,789.54 = 1,963.80 : x
  2. Step 2: Convert to fraction form
    5,859.40/8,789.54 = 1,963.80/x
  3. Step 3: Cross multiply
    5,859.40x = 8,789.54 × 1,963.80
  4. Step 4: Simplify right side
    5,859.40x = 17,260,898.65
  5. Step 5: Solve for x
    x = 17,260,898.65/5,859.40
  6. Step 6: Final answer
    x = 2,945.85

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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.