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Finding the Fourth Proportional to 4,406.80, 6,608.40 and 1,940.80

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Solution

The fourth proportional to 4,406.80, 6,608.40 and 1,940.80 is: 2,910.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,406.80 : 6,608.40 = 1,940.80 : x
  2. Step 2: Convert to fraction form
    4,406.80/6,608.40 = 1,940.80/x
  3. Step 3: Cross multiply
    4,406.80x = 6,608.40 × 1,940.80
  4. Step 4: Simplify right side
    4,406.80x = 12,825,582.72
  5. Step 5: Solve for x
    x = 12,825,582.72/4,406.80
  6. Step 6: Final answer
    x = 2,910.41

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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.