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Finding the Fourth Proportional to 2,429.26, 3,644.42 and 890.26

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Solution

The fourth proportional to 2,429.26, 3,644.42 and 890.26 is: 1,335.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,429.26 : 3,644.42 = 890.26 : x
  2. Step 2: Convert to fraction form
    2,429.26/3,644.42 = 890.26/x
  3. Step 3: Cross multiply
    2,429.26x = 3,644.42 × 890.26
  4. Step 4: Simplify right side
    2,429.26x = 3,244,481.35
  5. Step 5: Solve for x
    x = 3,244,481.35/2,429.26
  6. Step 6: Final answer
    x = 1,335.58

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1.5x scale

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.