Home / 2,481.40-3,722.10-1,021.60

Finding the Fourth Proportional to 2,481.40, 3,722.10 and 1,021.60

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Solution

The fourth proportional to 2,481.40, 3,722.10 and 1,021.60 is: 1,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,481.40 : 3,722.10 = 1,021.60 : x
  2. Step 2: Convert to fraction form
    2,481.40/3,722.10 = 1,021.60/x
  3. Step 3: Cross multiply
    2,481.40x = 3,722.10 × 1,021.60
  4. Step 4: Simplify right side
    2,481.40x = 3,802,497.36
  5. Step 5: Solve for x
    x = 3,802,497.36/2,481.40
  6. Step 6: Final answer
    x = 1,532.40

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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.