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Finding the Fourth Proportional to 7,205.17, 10,806.87 and 1,940.60

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Solution

The fourth proportional to 7,205.17, 10,806.87 and 1,940.60 is: 2,910.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,205.17 : 10,806.87 = 1,940.60 : x
  2. Step 2: Convert to fraction form
    7,205.17/10,806.87 = 1,940.60/x
  3. Step 3: Cross multiply
    7,205.17x = 10,806.87 × 1,940.60
  4. Step 4: Simplify right side
    7,205.17x = 20,971,811.92
  5. Step 5: Solve for x
    x = 20,971,811.92/7,205.17
  6. Step 6: Final answer
    x = 2,910.66

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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.