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Finding the Fourth Proportional to 3,377.61, 4,661.05 and 1,961.29

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Solution

The fourth proportional to 3,377.61, 4,661.05 and 1,961.29 is: 2,706.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,377.61 : 4,661.05 = 1,961.29 : x
  2. Step 2: Convert to fraction form
    3,377.61/4,661.05 = 1,961.29/x
  3. Step 3: Cross multiply
    3,377.61x = 4,661.05 × 1,961.29
  4. Step 4: Simplify right side
    3,377.61x = 9,141,670.75
  5. Step 5: Solve for x
    x = 9,141,670.75/3,377.61
  6. Step 6: Final answer
    x = 2,706.55

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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.