Home / 3,162.78-4,364.89-1,836

Finding the Fourth Proportional to 3,162.78, 4,364.89 and 1,836

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Solution

The fourth proportional to 3,162.78, 4,364.89 and 1,836 is: 2,533.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,162.78 : 4,364.89 = 1,836 : x
  2. Step 2: Convert to fraction form
    3,162.78/4,364.89 = 1,836/x
  3. Step 3: Cross multiply
    3,162.78x = 4,364.89 × 1,836
  4. Step 4: Simplify right side
    3,162.78x = 8,013,933.45
  5. Step 5: Solve for x
    x = 8,013,933.45/3,162.78
  6. Step 6: Final answer
    x = 2,533.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.