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Finding the Fourth Proportional to 3,668.69, 5,503.58 and 1,328.87

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Solution

The fourth proportional to 3,668.69, 5,503.58 and 1,328.87 is: 1,993.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,668.69 : 5,503.58 = 1,328.87 : x
  2. Step 2: Convert to fraction form
    3,668.69/5,503.58 = 1,328.87/x
  3. Step 3: Cross multiply
    3,668.69x = 5,503.58 × 1,328.87
  4. Step 4: Simplify right side
    3,668.69x = 7,313,542.35
  5. Step 5: Solve for x
    x = 7,313,542.35/3,668.69
  6. Step 6: Final answer
    x = 1,993.50

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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.