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Finding the Fourth Proportional to 6,889.53, 9,507.22 and 3,745.72

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Solution

The fourth proportional to 6,889.53, 9,507.22 and 3,745.72 is: 5,168.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,889.53 : 9,507.22 = 3,745.72 : x
  2. Step 2: Convert to fraction form
    6,889.53/9,507.22 = 3,745.72/x
  3. Step 3: Cross multiply
    6,889.53x = 9,507.22 × 3,745.72
  4. Step 4: Simplify right side
    6,889.53x = 35,611,336.56
  5. Step 5: Solve for x
    x = 35,611,336.56/6,889.53
  6. Step 6: Final answer
    x = 5,168.91

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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.