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Finding the Fourth Proportional to 8,968.41, 12,350.70 and 8,939.25

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Solution

The fourth proportional to 8,968.41, 12,350.70 and 8,939.25 is: 12,310.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.41 : 12,350.70 = 8,939.25 : x
  2. Step 2: Convert to fraction form
    8,968.41/12,350.70 = 8,939.25/x
  3. Step 3: Cross multiply
    8,968.41x = 12,350.70 × 8,939.25
  4. Step 4: Simplify right side
    8,968.41x = 110,405,994.98
  5. Step 5: Solve for x
    x = 110,405,994.98/8,968.41
  6. Step 6: Final answer
    x = 12,310.54

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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.