Home / 3,821.62-5,730.45-1,972.30

Finding the Fourth Proportional to 3,821.62, 5,730.45 and 1,972.30

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Solution

The fourth proportional to 3,821.62, 5,730.45 and 1,972.30 is: 2,957.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.62 : 5,730.45 = 1,972.30 : x
  2. Step 2: Convert to fraction form
    3,821.62/5,730.45 = 1,972.30/x
  3. Step 3: Cross multiply
    3,821.62x = 5,730.45 × 1,972.30
  4. Step 4: Simplify right side
    3,821.62x = 11,302,166.54
  5. Step 5: Solve for x
    x = 11,302,166.54/3,821.62
  6. Step 6: Final answer
    x = 2,957.43

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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.