Home / 2,481.20-3,721.80-1,509.20

Finding the Fourth Proportional to 2,481.20, 3,721.80 and 1,509.20

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Solution

The fourth proportional to 2,481.20, 3,721.80 and 1,509.20 is: 2,263.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,481.20 : 3,721.80 = 1,509.20 : x
  2. Step 2: Convert to fraction form
    2,481.20/3,721.80 = 1,509.20/x
  3. Step 3: Cross multiply
    2,481.20x = 3,721.80 × 1,509.20
  4. Step 4: Simplify right side
    2,481.20x = 5,616,940.56
  5. Step 5: Solve for x
    x = 5,616,940.56/2,481.20
  6. Step 6: Final answer
    x = 2,263.80

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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.