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Finding the Fourth Proportional to 6,396.60, 9,609.30 and 6,223.80

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Solution

The fourth proportional to 6,396.60, 9,609.30 and 6,223.80 is: 9,349.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,396.60 : 9,609.30 = 6,223.80 : x
  2. Step 2: Convert to fraction form
    6,396.60/9,609.30 = 6,223.80/x
  3. Step 3: Cross multiply
    6,396.60x = 9,609.30 × 6,223.80
  4. Step 4: Simplify right side
    6,396.60x = 59,806,361.34
  5. Step 5: Solve for x
    x = 59,806,361.34/6,396.60
  6. Step 6: Final answer
    x = 9,349.71

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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.