Home / 3,851.29-5,777.81-1,218.96

Finding the Fourth Proportional to 3,851.29, 5,777.81 and 1,218.96

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Solution

The fourth proportional to 3,851.29, 5,777.81 and 1,218.96 is: 1,828.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.29 : 5,777.81 = 1,218.96 : x
  2. Step 2: Convert to fraction form
    3,851.29/5,777.81 = 1,218.96/x
  3. Step 3: Cross multiply
    3,851.29x = 5,777.81 × 1,218.96
  4. Step 4: Simplify right side
    3,851.29x = 7,042,919.28
  5. Step 5: Solve for x
    x = 7,042,919.28/3,851.29
  6. Step 6: Final answer
    x = 1,828.72

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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.