Home / 2,821.90-4,230.06-1,338.51

Finding the Fourth Proportional to 2,821.90, 4,230.06 and 1,338.51

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Solution

The fourth proportional to 2,821.90, 4,230.06 and 1,338.51 is: 2,006.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.90 : 4,230.06 = 1,338.51 : x
  2. Step 2: Convert to fraction form
    2,821.90/4,230.06 = 1,338.51/x
  3. Step 3: Cross multiply
    2,821.90x = 4,230.06 × 1,338.51
  4. Step 4: Simplify right side
    2,821.90x = 5,661,977.61
  5. Step 5: Solve for x
    x = 5,661,977.61/2,821.90
  6. Step 6: Final answer
    x = 2,006.44

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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.