Home / 3,936.58-5,905.74-1,304.90

Finding the Fourth Proportional to 3,936.58, 5,905.74 and 1,304.90

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Solution

The fourth proportional to 3,936.58, 5,905.74 and 1,304.90 is: 1,957.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.58 : 5,905.74 = 1,304.90 : x
  2. Step 2: Convert to fraction form
    3,936.58/5,905.74 = 1,304.90/x
  3. Step 3: Cross multiply
    3,936.58x = 5,905.74 × 1,304.90
  4. Step 4: Simplify right side
    3,936.58x = 7,706,400.13
  5. Step 5: Solve for x
    x = 7,706,400.13/3,936.58
  6. Step 6: Final answer
    x = 1,957.64

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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.