Home / 2,321.20-3,481.80-1,673.20

Finding the Fourth Proportional to 2,321.20, 3,481.80 and 1,673.20

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Solution

The fourth proportional to 2,321.20, 3,481.80 and 1,673.20 is: 2,509.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.20 : 3,481.80 = 1,673.20 : x
  2. Step 2: Convert to fraction form
    2,321.20/3,481.80 = 1,673.20/x
  3. Step 3: Cross multiply
    2,321.20x = 3,481.80 × 1,673.20
  4. Step 4: Simplify right side
    2,321.20x = 5,825,747.76
  5. Step 5: Solve for x
    x = 5,825,747.76/2,321.20
  6. Step 6: Final answer
    x = 2,509.80

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1.5x scale

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.