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Finding the Fourth Proportional to 6,783.89, 9,361.50 and 3,951.36

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Solution

The fourth proportional to 6,783.89, 9,361.50 and 3,951.36 is: 5,452.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,783.89 : 9,361.50 = 3,951.36 : x
  2. Step 2: Convert to fraction form
    6,783.89/9,361.50 = 3,951.36/x
  3. Step 3: Cross multiply
    6,783.89x = 9,361.50 × 3,951.36
  4. Step 4: Simplify right side
    6,783.89x = 36,990,633.24
  5. Step 5: Solve for x
    x = 36,990,633.24/6,783.89
  6. Step 6: Final answer
    x = 5,452.71

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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.