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Finding the Fourth Proportional to 6,649.86, 9,969.38 and 2,489.24

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Solution

The fourth proportional to 6,649.86, 9,969.38 and 2,489.24 is: 3,731.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,649.86 : 9,969.38 = 2,489.24 : x
  2. Step 2: Convert to fraction form
    6,649.86/9,969.38 = 2,489.24/x
  3. Step 3: Cross multiply
    6,649.86x = 9,969.38 × 2,489.24
  4. Step 4: Simplify right side
    6,649.86x = 24,816,179.47
  5. Step 5: Solve for x
    x = 24,816,179.47/6,649.86
  6. Step 6: Final answer
    x = 3,731.83

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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.