Home / 3,812.96-5,721.87-1,621.69

Finding the Fourth Proportional to 3,812.96, 5,721.87 and 1,621.69

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Solution

The fourth proportional to 3,812.96, 5,721.87 and 1,621.69 is: 2,433.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.96 : 5,721.87 = 1,621.69 : x
  2. Step 2: Convert to fraction form
    3,812.96/5,721.87 = 1,621.69/x
  3. Step 3: Cross multiply
    3,812.96x = 5,721.87 × 1,621.69
  4. Step 4: Simplify right side
    3,812.96x = 9,279,091.14
  5. Step 5: Solve for x
    x = 9,279,091.14/3,812.96
  6. Step 6: Final answer
    x = 2,433.56

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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.