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Finding the Fourth Proportional to 8,968.14, 12,375.05 and 5,190.57

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Solution

The fourth proportional to 8,968.14, 12,375.05 and 5,190.57 is: 7,162.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.14 : 12,375.05 = 5,190.57 : x
  2. Step 2: Convert to fraction form
    8,968.14/12,375.05 = 5,190.57/x
  3. Step 3: Cross multiply
    8,968.14x = 12,375.05 × 5,190.57
  4. Step 4: Simplify right side
    8,968.14x = 64,233,537.33
  5. Step 5: Solve for x
    x = 64,233,537.33/8,968.14
  6. Step 6: Final answer
    x = 7,162.41

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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.