Home / 2,623.40-3,928.70-1,970.60

Finding the Fourth Proportional to 2,623.40, 3,928.70 and 1,970.60

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Solution

The fourth proportional to 2,623.40, 3,928.70 and 1,970.60 is: 2,951.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,623.40 : 3,928.70 = 1,970.60 : x
  2. Step 2: Convert to fraction form
    2,623.40/3,928.70 = 1,970.60/x
  3. Step 3: Cross multiply
    2,623.40x = 3,928.70 × 1,970.60
  4. Step 4: Simplify right side
    2,623.40x = 7,741,896.22
  5. Step 5: Solve for x
    x = 7,741,896.22/2,623.40
  6. Step 6: Final answer
    x = 2,951.09

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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.