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Finding the Fourth Proportional to 3,706.80, 5,561.82 and 1,975

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Solution

The fourth proportional to 3,706.80, 5,561.82 and 1,975 is: 2,963.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,706.80 : 5,561.82 = 1,975 : x
  2. Step 2: Convert to fraction form
    3,706.80/5,561.82 = 1,975/x
  3. Step 3: Cross multiply
    3,706.80x = 5,561.82 × 1,975
  4. Step 4: Simplify right side
    3,706.80x = 10,984,594.50
  5. Step 5: Solve for x
    x = 10,984,594.50/3,706.80
  6. Step 6: Final answer
    x = 2,963.36

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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.