Home / 4,936.78-7,398.96-2,161.72

Finding the Fourth Proportional to 4,936.78, 7,398.96 and 2,161.72

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Solution

The fourth proportional to 4,936.78, 7,398.96 and 2,161.72 is: 3,239.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,936.78 : 7,398.96 = 2,161.72 : x
  2. Step 2: Convert to fraction form
    4,936.78/7,398.96 = 2,161.72/x
  3. Step 3: Cross multiply
    4,936.78x = 7,398.96 × 2,161.72
  4. Step 4: Simplify right side
    4,936.78x = 15,994,479.81
  5. Step 5: Solve for x
    x = 15,994,479.81/4,936.78
  6. Step 6: Final answer
    x = 3,239.86

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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.