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Finding the Fourth Proportional to 3,608.62, 5,377.05 and 3,215.61

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Solution

The fourth proportional to 3,608.62, 5,377.05 and 3,215.61 is: 4,791.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.62 : 5,377.05 = 3,215.61 : x
  2. Step 2: Convert to fraction form
    3,608.62/5,377.05 = 3,215.61/x
  3. Step 3: Cross multiply
    3,608.62x = 5,377.05 × 3,215.61
  4. Step 4: Simplify right side
    3,608.62x = 17,290,495.75
  5. Step 5: Solve for x
    x = 17,290,495.75/3,608.62
  6. Step 6: Final answer
    x = 4,791.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.