Home / 2,620.97-3,932.40-1,321.46

Finding the Fourth Proportional to 2,620.97, 3,932.40 and 1,321.46

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Solution

The fourth proportional to 2,620.97, 3,932.40 and 1,321.46 is: 1,982.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.97 : 3,932.40 = 1,321.46 : x
  2. Step 2: Convert to fraction form
    2,620.97/3,932.40 = 1,321.46/x
  3. Step 3: Cross multiply
    2,620.97x = 3,932.40 × 1,321.46
  4. Step 4: Simplify right side
    2,620.97x = 5,196,524.09
  5. Step 5: Solve for x
    x = 5,196,524.09/2,620.97
  6. Step 6: Final answer
    x = 1,982.67

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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.