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Finding the Fourth Proportional to 3,668.57, 5,503.28 and 1,329.68

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Solution

The fourth proportional to 3,668.57, 5,503.28 and 1,329.68 is: 1,994.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,668.57 : 5,503.28 = 1,329.68 : x
  2. Step 2: Convert to fraction form
    3,668.57/5,503.28 = 1,329.68/x
  3. Step 3: Cross multiply
    3,668.57x = 5,503.28 × 1,329.68
  4. Step 4: Simplify right side
    3,668.57x = 7,317,601.35
  5. Step 5: Solve for x
    x = 7,317,601.35/3,668.57
  6. Step 6: Final answer
    x = 1,994.67

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1.5x scale

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.