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Finding the Fourth Proportional to 2,429.96, 3,644.88 and 698.58

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Solution

The fourth proportional to 2,429.96, 3,644.88 and 698.58 is: 1,047.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,429.96 : 3,644.88 = 698.58 : x
  2. Step 2: Convert to fraction form
    2,429.96/3,644.88 = 698.58/x
  3. Step 3: Cross multiply
    2,429.96x = 3,644.88 × 698.58
  4. Step 4: Simplify right side
    2,429.96x = 2,546,241.58
  5. Step 5: Solve for x
    x = 2,546,241.58/2,429.96
  6. Step 6: Final answer
    x = 1,047.86

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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.