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Finding the Fourth Proportional to 3,481.22, 4,803.90 and 1,988.94

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Solution

The fourth proportional to 3,481.22, 4,803.90 and 1,988.94 is: 2,744.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.22 : 4,803.90 = 1,988.94 : x
  2. Step 2: Convert to fraction form
    3,481.22/4,803.90 = 1,988.94/x
  3. Step 3: Cross multiply
    3,481.22x = 4,803.90 × 1,988.94
  4. Step 4: Simplify right side
    3,481.22x = 9,554,668.87
  5. Step 5: Solve for x
    x = 9,554,668.87/3,481.22
  6. Step 6: Final answer
    x = 2,744.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.