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Finding the Fourth Proportional to 3,668.25, 5,489.61 and 3,455.01

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Solution

The fourth proportional to 3,668.25, 5,489.61 and 3,455.01 is: 5,170.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,668.25 : 5,489.61 = 3,455.01 : x
  2. Step 2: Convert to fraction form
    3,668.25/5,489.61 = 3,455.01/x
  3. Step 3: Cross multiply
    3,668.25x = 5,489.61 × 3,455.01
  4. Step 4: Simplify right side
    3,668.25x = 18,966,657.45
  5. Step 5: Solve for x
    x = 18,966,657.45/3,668.25
  6. Step 6: Final answer
    x = 5,170.49

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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.