Home / 3,719.34-5,578.29-1,121.67

Finding the Fourth Proportional to 3,719.34, 5,578.29 and 1,121.67

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Solution

The fourth proportional to 3,719.34, 5,578.29 and 1,121.67 is: 1,682.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.34 : 5,578.29 = 1,121.67 : x
  2. Step 2: Convert to fraction form
    3,719.34/5,578.29 = 1,121.67/x
  3. Step 3: Cross multiply
    3,719.34x = 5,578.29 × 1,121.67
  4. Step 4: Simplify right side
    3,719.34x = 6,257,000.54
  5. Step 5: Solve for x
    x = 6,257,000.54/3,719.34
  6. Step 6: Final answer
    x = 1,682.29

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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.