Home / 3,885.68-5,828.78-1,112.37

Finding the Fourth Proportional to 3,885.68, 5,828.78 and 1,112.37

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Solution

The fourth proportional to 3,885.68, 5,828.78 and 1,112.37 is: 1,668.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.68 : 5,828.78 = 1,112.37 : x
  2. Step 2: Convert to fraction form
    3,885.68/5,828.78 = 1,112.37/x
  3. Step 3: Cross multiply
    3,885.68x = 5,828.78 × 1,112.37
  4. Step 4: Simplify right side
    3,885.68x = 6,483,762.79
  5. Step 5: Solve for x
    x = 6,483,762.79/3,885.68
  6. Step 6: Final answer
    x = 1,668.63

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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.