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Finding the Fourth Proportional to 1,936.80, 2,905.70 and 841.37

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Solution

The fourth proportional to 1,936.80, 2,905.70 and 841.37 is: 1,262.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.80 : 2,905.70 = 841.37 : x
  2. Step 2: Convert to fraction form
    1,936.80/2,905.70 = 841.37/x
  3. Step 3: Cross multiply
    1,936.80x = 2,905.70 × 841.37
  4. Step 4: Simplify right side
    1,936.80x = 2,444,750.07
  5. Step 5: Solve for x
    x = 2,444,750.07/1,936.80
  6. Step 6: Final answer
    x = 1,262.26

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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.