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Finding the Fourth Proportional to 4,072.80, 6,103.80 and 3,608.40

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Solution

The fourth proportional to 4,072.80, 6,103.80 and 3,608.40 is: 5,407.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,072.80 : 6,103.80 = 3,608.40 : x
  2. Step 2: Convert to fraction form
    4,072.80/6,103.80 = 3,608.40/x
  3. Step 3: Cross multiply
    4,072.80x = 6,103.80 × 3,608.40
  4. Step 4: Simplify right side
    4,072.80x = 22,024,951.92
  5. Step 5: Solve for x
    x = 22,024,951.92/4,072.80
  6. Step 6: Final answer
    x = 5,407.82

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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.