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Finding the Fourth Proportional to 3,711.98, 5,121.63 and 2,055.98

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Solution

The fourth proportional to 3,711.98, 5,121.63 and 2,055.98 is: 2,836.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.98 : 5,121.63 = 2,055.98 : x
  2. Step 2: Convert to fraction form
    3,711.98/5,121.63 = 2,055.98/x
  3. Step 3: Cross multiply
    3,711.98x = 5,121.63 × 2,055.98
  4. Step 4: Simplify right side
    3,711.98x = 10,529,968.85
  5. Step 5: Solve for x
    x = 10,529,968.85/3,711.98
  6. Step 6: Final answer
    x = 2,836.75

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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.