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Finding the Fourth Proportional to 3,690.94, 5,093.40 and 2,119

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Solution

The fourth proportional to 3,690.94, 5,093.40 and 2,119 is: 2,924.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.94 : 5,093.40 = 2,119 : x
  2. Step 2: Convert to fraction form
    3,690.94/5,093.40 = 2,119/x
  3. Step 3: Cross multiply
    3,690.94x = 5,093.40 × 2,119
  4. Step 4: Simplify right side
    3,690.94x = 10,792,914.60
  5. Step 5: Solve for x
    x = 10,792,914.60/3,690.94
  6. Step 6: Final answer
    x = 2,924.16

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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.