Home / 3,936-5,904.56-1,338.24

Finding the Fourth Proportional to 3,936, 5,904.56 and 1,338.24

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Solution

The fourth proportional to 3,936, 5,904.56 and 1,338.24 is: 2,007.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936 : 5,904.56 = 1,338.24 : x
  2. Step 2: Convert to fraction form
    3,936/5,904.56 = 1,338.24/x
  3. Step 3: Cross multiply
    3,936x = 5,904.56 × 1,338.24
  4. Step 4: Simplify right side
    3,936x = 7,901,718.37
  5. Step 5: Solve for x
    x = 7,901,718.37/3,936
  6. Step 6: Final answer
    x = 2,007.55

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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.