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Finding the Fourth Proportional to 2,989.38, 4,484.09 and 798.45

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Solution

The fourth proportional to 2,989.38, 4,484.09 and 798.45 is: 1,197.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.38 : 4,484.09 = 798.45 : x
  2. Step 2: Convert to fraction form
    2,989.38/4,484.09 = 798.45/x
  3. Step 3: Cross multiply
    2,989.38x = 4,484.09 × 798.45
  4. Step 4: Simplify right side
    2,989.38x = 3,580,321.66
  5. Step 5: Solve for x
    x = 3,580,321.66/2,989.38
  6. Step 6: Final answer
    x = 1,197.68

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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.