Home / 7,847.44-11,759.50-3,947

Finding the Fourth Proportional to 7,847.44, 11,759.50 and 3,947

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Solution

The fourth proportional to 7,847.44, 11,759.50 and 3,947 is: 5,914.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,847.44 : 11,759.50 = 3,947 : x
  2. Step 2: Convert to fraction form
    7,847.44/11,759.50 = 3,947/x
  3. Step 3: Cross multiply
    7,847.44x = 11,759.50 × 3,947
  4. Step 4: Simplify right side
    7,847.44x = 46,414,746.50
  5. Step 5: Solve for x
    x = 46,414,746.50/7,847.44
  6. Step 6: Final answer
    x = 5,914.64

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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.