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Finding the Fourth Proportional to 1,908.93, 2,847.79 and 1,856.01

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Solution

The fourth proportional to 1,908.93, 2,847.79 and 1,856.01 is: 2,768.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.93 : 2,847.79 = 1,856.01 : x
  2. Step 2: Convert to fraction form
    1,908.93/2,847.79 = 1,856.01/x
  3. Step 3: Cross multiply
    1,908.93x = 2,847.79 × 1,856.01
  4. Step 4: Simplify right side
    1,908.93x = 5,285,522.08
  5. Step 5: Solve for x
    x = 5,285,522.08/1,908.93
  6. Step 6: Final answer
    x = 2,768.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.