Home / 3,021.90-4,532.79-1,988.43

Finding the Fourth Proportional to 3,021.90, 4,532.79 and 1,988.43

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Solution

The fourth proportional to 3,021.90, 4,532.79 and 1,988.43 is: 2,982.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.90 : 4,532.79 = 1,988.43 : x
  2. Step 2: Convert to fraction form
    3,021.90/4,532.79 = 1,988.43/x
  3. Step 3: Cross multiply
    3,021.90x = 4,532.79 × 1,988.43
  4. Step 4: Simplify right side
    3,021.90x = 9,013,135.62
  5. Step 5: Solve for x
    x = 9,013,135.62/3,021.90
  6. Step 6: Final answer
    x = 2,982.61

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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.