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Finding the Fourth Proportional to 3,891.71, 5,364.20 and 2,710.73

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Solution

The fourth proportional to 3,891.71, 5,364.20 and 2,710.73 is: 3,736.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.71 : 5,364.20 = 2,710.73 : x
  2. Step 2: Convert to fraction form
    3,891.71/5,364.20 = 2,710.73/x
  3. Step 3: Cross multiply
    3,891.71x = 5,364.20 × 2,710.73
  4. Step 4: Simplify right side
    3,891.71x = 14,540,897.87
  5. Step 5: Solve for x
    x = 14,540,897.87/3,891.71
  6. Step 6: Final answer
    x = 3,736.38

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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.