Home / 6,938.20-9,571.98-3,912.64

Finding the Fourth Proportional to 6,938.20, 9,571.98 and 3,912.64

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Solution

The fourth proportional to 6,938.20, 9,571.98 and 3,912.64 is: 5,397.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,938.20 : 9,571.98 = 3,912.64 : x
  2. Step 2: Convert to fraction form
    6,938.20/9,571.98 = 3,912.64/x
  3. Step 3: Cross multiply
    6,938.20x = 9,571.98 × 3,912.64
  4. Step 4: Simplify right side
    6,938.20x = 37,451,711.83
  5. Step 5: Solve for x
    x = 37,451,711.83/6,938.20
  6. Step 6: Final answer
    x = 5,397.90

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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.