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Finding the Fourth Proportional to 3,236.70, 4,852.18 and 1,917.21

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Solution

The fourth proportional to 3,236.70, 4,852.18 and 1,917.21 is: 2,874.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,236.70 : 4,852.18 = 1,917.21 : x
  2. Step 2: Convert to fraction form
    3,236.70/4,852.18 = 1,917.21/x
  3. Step 3: Cross multiply
    3,236.70x = 4,852.18 × 1,917.21
  4. Step 4: Simplify right side
    3,236.70x = 9,302,648.02
  5. Step 5: Solve for x
    x = 9,302,648.02/3,236.70
  6. Step 6: Final answer
    x = 2,874.11

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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.