Home / 3,885.75-5,828.47-1,112.31

Finding the Fourth Proportional to 3,885.75, 5,828.47 and 1,112.31

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Solution

The fourth proportional to 3,885.75, 5,828.47 and 1,112.31 is: 1,668.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.75 : 5,828.47 = 1,112.31 : x
  2. Step 2: Convert to fraction form
    3,885.75/5,828.47 = 1,112.31/x
  3. Step 3: Cross multiply
    3,885.75x = 5,828.47 × 1,112.31
  4. Step 4: Simplify right side
    3,885.75x = 6,483,062.68
  5. Step 5: Solve for x
    x = 6,483,062.68/3,885.75
  6. Step 6: Final answer
    x = 1,668.42

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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.