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Finding the Fourth Proportional to 7,540.56, 11,310.84 and 6,918.48

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Solution

The fourth proportional to 7,540.56, 11,310.84 and 6,918.48 is: 10,377.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,540.56 : 11,310.84 = 6,918.48 : x
  2. Step 2: Convert to fraction form
    7,540.56/11,310.84 = 6,918.48/x
  3. Step 3: Cross multiply
    7,540.56x = 11,310.84 × 6,918.48
  4. Step 4: Simplify right side
    7,540.56x = 78,253,820.32
  5. Step 5: Solve for x
    x = 78,253,820.32/7,540.56
  6. Step 6: Final answer
    x = 10,377.72

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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.