Home / 3,628.32-5,443.92-1,321.44

Finding the Fourth Proportional to 3,628.32, 5,443.92 and 1,321.44

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Solution

The fourth proportional to 3,628.32, 5,443.92 and 1,321.44 is: 1,982.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,628.32 : 5,443.92 = 1,321.44 : x
  2. Step 2: Convert to fraction form
    3,628.32/5,443.92 = 1,321.44/x
  3. Step 3: Cross multiply
    3,628.32x = 5,443.92 × 1,321.44
  4. Step 4: Simplify right side
    3,628.32x = 7,193,813.64
  5. Step 5: Solve for x
    x = 7,193,813.64/3,628.32
  6. Step 6: Final answer
    x = 1,982.68

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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.