Home / 3,947.94-5,919.84-1,971.45

Finding the Fourth Proportional to 3,947.94, 5,919.84 and 1,971.45

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Solution

The fourth proportional to 3,947.94, 5,919.84 and 1,971.45 is: 2,956.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.94 : 5,919.84 = 1,971.45 : x
  2. Step 2: Convert to fraction form
    3,947.94/5,919.84 = 1,971.45/x
  3. Step 3: Cross multiply
    3,947.94x = 5,919.84 × 1,971.45
  4. Step 4: Simplify right side
    3,947.94x = 11,670,668.57
  5. Step 5: Solve for x
    x = 11,670,668.57/3,947.94
  6. Step 6: Final answer
    x = 2,956.14

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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.