Home / 9,138.21-12,606.60-5,361.60

Finding the Fourth Proportional to 9,138.21, 12,606.60 and 5,361.60

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Solution

The fourth proportional to 9,138.21, 12,606.60 and 5,361.60 is: 7,396.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.21 : 12,606.60 = 5,361.60 : x
  2. Step 2: Convert to fraction form
    9,138.21/12,606.60 = 5,361.60/x
  3. Step 3: Cross multiply
    9,138.21x = 12,606.60 × 5,361.60
  4. Step 4: Simplify right side
    9,138.21x = 67,591,546.56
  5. Step 5: Solve for x
    x = 67,591,546.56/9,138.21
  6. Step 6: Final answer
    x = 7,396.58

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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.