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Finding the Fourth Proportional to 6,963.21, 9,609.21 and 3,819.33

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Solution

The fourth proportional to 6,963.21, 9,609.21 and 3,819.33 is: 5,270.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,963.21 : 9,609.21 = 3,819.33 : x
  2. Step 2: Convert to fraction form
    6,963.21/9,609.21 = 3,819.33/x
  3. Step 3: Cross multiply
    6,963.21x = 9,609.21 × 3,819.33
  4. Step 4: Simplify right side
    6,963.21x = 36,700,744.03
  5. Step 5: Solve for x
    x = 36,700,744.03/6,963.21
  6. Step 6: Final answer
    x = 5,270.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.