Home / 3,840.36-5,761.38-1,243.56

Finding the Fourth Proportional to 3,840.36, 5,761.38 and 1,243.56

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Solution

The fourth proportional to 3,840.36, 5,761.38 and 1,243.56 is: 1,865.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.36 : 5,761.38 = 1,243.56 : x
  2. Step 2: Convert to fraction form
    3,840.36/5,761.38 = 1,243.56/x
  3. Step 3: Cross multiply
    3,840.36x = 5,761.38 × 1,243.56
  4. Step 4: Simplify right side
    3,840.36x = 7,164,621.71
  5. Step 5: Solve for x
    x = 7,164,621.71/3,840.36
  6. Step 6: Final answer
    x = 1,865.61

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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.