Home / 7,906.19-11,857.93-2,640.60

Finding the Fourth Proportional to 7,906.19, 11,857.93 and 2,640.60

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Solution

The fourth proportional to 7,906.19, 11,857.93 and 2,640.60 is: 3,960.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,906.19 : 11,857.93 = 2,640.60 : x
  2. Step 2: Convert to fraction form
    7,906.19/11,857.93 = 2,640.60/x
  3. Step 3: Cross multiply
    7,906.19x = 11,857.93 × 2,640.60
  4. Step 4: Simplify right side
    7,906.19x = 31,311,998.89
  5. Step 5: Solve for x
    x = 31,311,998.89/7,906.19
  6. Step 6: Final answer
    x = 3,960.44

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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.