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Finding the Fourth Proportional to 6,619.93, 9,930.81 and 1,940.27

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Solution

The fourth proportional to 6,619.93, 9,930.81 and 1,940.27 is: 2,910.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.93 : 9,930.81 = 1,940.27 : x
  2. Step 2: Convert to fraction form
    6,619.93/9,930.81 = 1,940.27/x
  3. Step 3: Cross multiply
    6,619.93x = 9,930.81 × 1,940.27
  4. Step 4: Simplify right side
    6,619.93x = 19,268,410.34
  5. Step 5: Solve for x
    x = 19,268,410.34/6,619.93
  6. Step 6: Final answer
    x = 2,910.67

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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.