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Finding the Fourth Proportional to 6,755.60, 10,135.80 and 6,515.60

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Solution

The fourth proportional to 6,755.60, 10,135.80 and 6,515.60 is: 9,775.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,755.60 : 10,135.80 = 6,515.60 : x
  2. Step 2: Convert to fraction form
    6,755.60/10,135.80 = 6,515.60/x
  3. Step 3: Cross multiply
    6,755.60x = 10,135.80 × 6,515.60
  4. Step 4: Simplify right side
    6,755.60x = 66,040,818.48
  5. Step 5: Solve for x
    x = 66,040,818.48/6,755.60
  6. Step 6: Final answer
    x = 9,775.71

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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.