Home / 3,821.30-5,730.60-1,356.20

Finding the Fourth Proportional to 3,821.30, 5,730.60 and 1,356.20

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Solution

The fourth proportional to 3,821.30, 5,730.60 and 1,356.20 is: 2,033.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.30 : 5,730.60 = 1,356.20 : x
  2. Step 2: Convert to fraction form
    3,821.30/5,730.60 = 1,356.20/x
  3. Step 3: Cross multiply
    3,821.30x = 5,730.60 × 1,356.20
  4. Step 4: Simplify right side
    3,821.30x = 7,771,839.72
  5. Step 5: Solve for x
    x = 7,771,839.72/3,821.30
  6. Step 6: Final answer
    x = 2,033.82

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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.