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Finding the Fourth Proportional to 3,668.96, 5,505.60 and 1,721.18

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Solution

The fourth proportional to 3,668.96, 5,505.60 and 1,721.18 is: 2,582.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,668.96 : 5,505.60 = 1,721.18 : x
  2. Step 2: Convert to fraction form
    3,668.96/5,505.60 = 1,721.18/x
  3. Step 3: Cross multiply
    3,668.96x = 5,505.60 × 1,721.18
  4. Step 4: Simplify right side
    3,668.96x = 9,476,128.61
  5. Step 5: Solve for x
    x = 9,476,128.61/3,668.96
  6. Step 6: Final answer
    x = 2,582.78

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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.