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Finding the Fourth Proportional to 6,728.70, 10,079.15 and 3,946.99

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Solution

The fourth proportional to 6,728.70, 10,079.15 and 3,946.99 is: 5,912.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,728.70 : 10,079.15 = 3,946.99 : x
  2. Step 2: Convert to fraction form
    6,728.70/10,079.15 = 3,946.99/x
  3. Step 3: Cross multiply
    6,728.70x = 10,079.15 × 3,946.99
  4. Step 4: Simplify right side
    6,728.70x = 39,782,284.52
  5. Step 5: Solve for x
    x = 39,782,284.52/6,728.70
  6. Step 6: Final answer
    x = 5,912.33

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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.