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Finding the Fourth Proportional to 7,237.80, 10,872.90 and 6,942.60

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Solution

The fourth proportional to 7,237.80, 10,872.90 and 6,942.60 is: 10,429.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,237.80 : 10,872.90 = 6,942.60 : x
  2. Step 2: Convert to fraction form
    7,237.80/10,872.90 = 6,942.60/x
  3. Step 3: Cross multiply
    7,237.80x = 10,872.90 × 6,942.60
  4. Step 4: Simplify right side
    7,237.80x = 75,486,195.54
  5. Step 5: Solve for x
    x = 75,486,195.54/7,237.80
  6. Step 6: Final answer
    x = 10,429.44

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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.