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Finding the Fourth Proportional to 6,739.47, 10,109.21 and 2,122.47

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Solution

The fourth proportional to 6,739.47, 10,109.21 and 2,122.47 is: 3,183.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,739.47 : 10,109.21 = 2,122.47 : x
  2. Step 2: Convert to fraction form
    6,739.47/10,109.21 = 2,122.47/x
  3. Step 3: Cross multiply
    6,739.47x = 10,109.21 × 2,122.47
  4. Step 4: Simplify right side
    6,739.47x = 21,456,484.34
  5. Step 5: Solve for x
    x = 21,456,484.34/6,739.47
  6. Step 6: Final answer
    x = 3,183.71

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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.