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Finding the Fourth Proportional to 3,405.74, 5,107.89 and 1,738.22

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Solution

The fourth proportional to 3,405.74, 5,107.89 and 1,738.22 is: 2,606.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.74 : 5,107.89 = 1,738.22 : x
  2. Step 2: Convert to fraction form
    3,405.74/5,107.89 = 1,738.22/x
  3. Step 3: Cross multiply
    3,405.74x = 5,107.89 × 1,738.22
  4. Step 4: Simplify right side
    3,405.74x = 8,878,636.56
  5. Step 5: Solve for x
    x = 8,878,636.56/3,405.74
  6. Step 6: Final answer
    x = 2,606.96

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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.