Home / 2,481.50-3,722.66-921.51

Finding the Fourth Proportional to 2,481.50, 3,722.66 and 921.51

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Solution

The fourth proportional to 2,481.50, 3,722.66 and 921.51 is: 1,382.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,481.50 : 3,722.66 = 921.51 : x
  2. Step 2: Convert to fraction form
    2,481.50/3,722.66 = 921.51/x
  3. Step 3: Cross multiply
    2,481.50x = 3,722.66 × 921.51
  4. Step 4: Simplify right side
    2,481.50x = 3,430,463.81
  5. Step 5: Solve for x
    x = 3,430,463.81/2,481.50
  6. Step 6: Final answer
    x = 1,382.42

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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.