Home / 3,923-5,883.88-1,290.50

Finding the Fourth Proportional to 3,923, 5,883.88 and 1,290.50

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Solution

The fourth proportional to 3,923, 5,883.88 and 1,290.50 is: 1,935.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923 : 5,883.88 = 1,290.50 : x
  2. Step 2: Convert to fraction form
    3,923/5,883.88 = 1,290.50/x
  3. Step 3: Cross multiply
    3,923x = 5,883.88 × 1,290.50
  4. Step 4: Simplify right side
    3,923x = 7,593,147.14
  5. Step 5: Solve for x
    x = 7,593,147.14/3,923
  6. Step 6: Final answer
    x = 1,935.55

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1.5x scale

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.