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Finding the Fourth Proportional to 6,170.57, 8,512.05 and 3,928.49

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Solution

The fourth proportional to 6,170.57, 8,512.05 and 3,928.49 is: 5,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,170.57 : 8,512.05 = 3,928.49 : x
  2. Step 2: Convert to fraction form
    6,170.57/8,512.05 = 3,928.49/x
  3. Step 3: Cross multiply
    6,170.57x = 8,512.05 × 3,928.49
  4. Step 4: Simplify right side
    6,170.57x = 33,439,503.30
  5. Step 5: Solve for x
    x = 33,439,503.30/6,170.57
  6. Step 6: Final answer
    x = 5,419.19

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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.