Home / 3,279.68-4,915.26-1,329.60

Finding the Fourth Proportional to 3,279.68, 4,915.26 and 1,329.60

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Solution

The fourth proportional to 3,279.68, 4,915.26 and 1,329.60 is: 1,992.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.68 : 4,915.26 = 1,329.60 : x
  2. Step 2: Convert to fraction form
    3,279.68/4,915.26 = 1,329.60/x
  3. Step 3: Cross multiply
    3,279.68x = 4,915.26 × 1,329.60
  4. Step 4: Simplify right side
    3,279.68x = 6,535,329.70
  5. Step 5: Solve for x
    x = 6,535,329.70/3,279.68
  6. Step 6: Final answer
    x = 1,992.67

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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.