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Finding the Fourth Proportional to 3,912.18, 5,864.93 and 1,936.89

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Solution

The fourth proportional to 3,912.18, 5,864.93 and 1,936.89 is: 2,903.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.18 : 5,864.93 = 1,936.89 : x
  2. Step 2: Convert to fraction form
    3,912.18/5,864.93 = 1,936.89/x
  3. Step 3: Cross multiply
    3,912.18x = 5,864.93 × 1,936.89
  4. Step 4: Simplify right side
    3,912.18x = 11,359,714.58
  5. Step 5: Solve for x
    x = 11,359,714.58/3,912.18
  6. Step 6: Final answer
    x = 2,903.68

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1.5x scale

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.