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Finding the Fourth Proportional to 3,668.86, 5,504.10 and 1,720

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Solution

The fourth proportional to 3,668.86, 5,504.10 and 1,720 is: 2,580.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,668.86 : 5,504.10 = 1,720 : x
  2. Step 2: Convert to fraction form
    3,668.86/5,504.10 = 1,720/x
  3. Step 3: Cross multiply
    3,668.86x = 5,504.10 × 1,720
  4. Step 4: Simplify right side
    3,668.86x = 9,467,052
  5. Step 5: Solve for x
    x = 9,467,052/3,668.86
  6. Step 6: Final answer
    x = 2,580.38

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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.