Home / 3,128.56-4,704.09-2,884.75

Finding the Fourth Proportional to 3,128.56, 4,704.09 and 2,884.75

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Solution

The fourth proportional to 3,128.56, 4,704.09 and 2,884.75 is: 4,337.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.56 : 4,704.09 = 2,884.75 : x
  2. Step 2: Convert to fraction form
    3,128.56/4,704.09 = 2,884.75/x
  3. Step 3: Cross multiply
    3,128.56x = 4,704.09 × 2,884.75
  4. Step 4: Simplify right side
    3,128.56x = 13,570,113.44
  5. Step 5: Solve for x
    x = 13,570,113.44/3,128.56
  6. Step 6: Final answer
    x = 4,337.49

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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.