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Finding the Fourth Proportional to 3,571.27, 5,357.71 and 1,927.78

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Solution

The fourth proportional to 3,571.27, 5,357.71 and 1,927.78 is: 2,892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.27 : 5,357.71 = 1,927.78 : x
  2. Step 2: Convert to fraction form
    3,571.27/5,357.71 = 1,927.78/x
  3. Step 3: Cross multiply
    3,571.27x = 5,357.71 × 1,927.78
  4. Step 4: Simplify right side
    3,571.27x = 10,328,486.18
  5. Step 5: Solve for x
    x = 10,328,486.18/3,571.27
  6. Step 6: Final answer
    x = 2,892.10

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1.5x scale

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.