Home / 9,138.18-12,608.66-5,361.54

Finding the Fourth Proportional to 9,138.18, 12,608.66 and 5,361.54

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Solution

The fourth proportional to 9,138.18, 12,608.66 and 5,361.54 is: 7,397.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.18 : 12,608.66 = 5,361.54 : x
  2. Step 2: Convert to fraction form
    9,138.18/12,608.66 = 5,361.54/x
  3. Step 3: Cross multiply
    9,138.18x = 12,608.66 × 5,361.54
  4. Step 4: Simplify right side
    9,138.18x = 67,601,834.94
  5. Step 5: Solve for x
    x = 67,601,834.94/9,138.18
  6. Step 6: Final answer
    x = 7,397.74

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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.