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Finding the Fourth Proportional to 7,205.43, 10,808.15 and 1,940.45

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Solution

The fourth proportional to 7,205.43, 10,808.15 and 1,940.45 is: 2,910.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,205.43 : 10,808.15 = 1,940.45 : x
  2. Step 2: Convert to fraction form
    7,205.43/10,808.15 = 1,940.45/x
  3. Step 3: Cross multiply
    7,205.43x = 10,808.15 × 1,940.45
  4. Step 4: Simplify right side
    7,205.43x = 20,972,610.92
  5. Step 5: Solve for x
    x = 20,972,610.92/7,205.43
  6. Step 6: Final answer
    x = 2,910.67

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Similar ratio
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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.