Home / 3,936.07-5,904.71-1,338.40

Finding the Fourth Proportional to 3,936.07, 5,904.71 and 1,338.40

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Solution

The fourth proportional to 3,936.07, 5,904.71 and 1,338.40 is: 2,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.07 : 5,904.71 = 1,338.40 : x
  2. Step 2: Convert to fraction form
    3,936.07/5,904.71 = 1,338.40/x
  3. Step 3: Cross multiply
    3,936.07x = 5,904.71 × 1,338.40
  4. Step 4: Simplify right side
    3,936.07x = 7,902,854.85
  5. Step 5: Solve for x
    x = 7,902,854.85/3,936.07
  6. Step 6: Final answer
    x = 2,007.80

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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.