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Finding the Fourth Proportional to 1,908.77, 2,859.50 and 982.94

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Solution

The fourth proportional to 1,908.77, 2,859.50 and 982.94 is: 1,472.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.77 : 2,859.50 = 982.94 : x
  2. Step 2: Convert to fraction form
    1,908.77/2,859.50 = 982.94/x
  3. Step 3: Cross multiply
    1,908.77x = 2,859.50 × 982.94
  4. Step 4: Simplify right side
    1,908.77x = 2,810,705.09
  5. Step 5: Solve for x
    x = 2,810,705.09/1,908.77
  6. Step 6: Final answer
    x = 1,472.53

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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.