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Finding the Fourth Proportional to 1,847.09, 2,768.51 and 806.45

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Solution

The fourth proportional to 1,847.09, 2,768.51 and 806.45 is: 1,208.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,847.09 : 2,768.51 = 806.45 : x
  2. Step 2: Convert to fraction form
    1,847.09/2,768.51 = 806.45/x
  3. Step 3: Cross multiply
    1,847.09x = 2,768.51 × 806.45
  4. Step 4: Simplify right side
    1,847.09x = 2,232,647.01
  5. Step 5: Solve for x
    x = 2,232,647.01/1,847.09
  6. Step 6: Final answer
    x = 1,208.74

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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.