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Finding the Fourth Proportional to 3,891.61, 5,364.02 and 2,757.66

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Solution

The fourth proportional to 3,891.61, 5,364.02 and 2,757.66 is: 3,801.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.61 : 5,364.02 = 2,757.66 : x
  2. Step 2: Convert to fraction form
    3,891.61/5,364.02 = 2,757.66/x
  3. Step 3: Cross multiply
    3,891.61x = 5,364.02 × 2,757.66
  4. Step 4: Simplify right side
    3,891.61x = 14,792,143.39
  5. Step 5: Solve for x
    x = 14,792,143.39/3,891.61
  6. Step 6: Final answer
    x = 3,801.03

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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.