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Finding the Fourth Proportional to 8,755.32, 13,122.90 and 3,823.80

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Solution

The fourth proportional to 8,755.32, 13,122.90 and 3,823.80 is: 5,731.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.32 : 13,122.90 = 3,823.80 : x
  2. Step 2: Convert to fraction form
    8,755.32/13,122.90 = 3,823.80/x
  3. Step 3: Cross multiply
    8,755.32x = 13,122.90 × 3,823.80
  4. Step 4: Simplify right side
    8,755.32x = 50,179,345.02
  5. Step 5: Solve for x
    x = 50,179,345.02/8,755.32
  6. Step 6: Final answer
    x = 5,731.30

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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.