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Finding the Fourth Proportional to 6,450.40, 9,682.80 and 3,854.80

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Solution

The fourth proportional to 6,450.40, 9,682.80 and 3,854.80 is: 5,786.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,450.40 : 9,682.80 = 3,854.80 : x
  2. Step 2: Convert to fraction form
    6,450.40/9,682.80 = 3,854.80/x
  3. Step 3: Cross multiply
    6,450.40x = 9,682.80 × 3,854.80
  4. Step 4: Simplify right side
    6,450.40x = 37,325,257.44
  5. Step 5: Solve for x
    x = 37,325,257.44/6,450.40
  6. Step 6: Final answer
    x = 5,786.50

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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.