Home / 4,072.80-6,112.38-1,881.78

Finding the Fourth Proportional to 4,072.80, 6,112.38 and 1,881.78

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Solution

The fourth proportional to 4,072.80, 6,112.38 and 1,881.78 is: 2,824.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,072.80 : 6,112.38 = 1,881.78 : x
  2. Step 2: Convert to fraction form
    4,072.80/6,112.38 = 1,881.78/x
  3. Step 3: Cross multiply
    4,072.80x = 6,112.38 × 1,881.78
  4. Step 4: Simplify right side
    4,072.80x = 11,502,154.44
  5. Step 5: Solve for x
    x = 11,502,154.44/4,072.80
  6. Step 6: Final answer
    x = 2,824.14

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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.