Home / 2,021.62-3,032.41-1,387.76

Finding the Fourth Proportional to 2,021.62, 3,032.41 and 1,387.76

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Solution

The fourth proportional to 2,021.62, 3,032.41 and 1,387.76 is: 2,081.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.62 : 3,032.41 = 1,387.76 : x
  2. Step 2: Convert to fraction form
    2,021.62/3,032.41 = 1,387.76/x
  3. Step 3: Cross multiply
    2,021.62x = 3,032.41 × 1,387.76
  4. Step 4: Simplify right side
    2,021.62x = 4,208,257.30
  5. Step 5: Solve for x
    x = 4,208,257.30/2,021.62
  6. Step 6: Final answer
    x = 2,081.63

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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.