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Finding the Fourth Proportional to 6,672.78, 9,198.23 and 4,991.63

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Solution

The fourth proportional to 6,672.78, 9,198.23 and 4,991.63 is: 6,880.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,672.78 : 9,198.23 = 4,991.63 : x
  2. Step 2: Convert to fraction form
    6,672.78/9,198.23 = 4,991.63/x
  3. Step 3: Cross multiply
    6,672.78x = 9,198.23 × 4,991.63
  4. Step 4: Simplify right side
    6,672.78x = 45,914,089.87
  5. Step 5: Solve for x
    x = 45,914,089.87/6,672.78
  6. Step 6: Final answer
    x = 6,880.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.