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Finding the Fourth Proportional to 3,408.94, 4,704.10 and 1,917.08

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Solution

The fourth proportional to 3,408.94, 4,704.10 and 1,917.08 is: 2,645.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.94 : 4,704.10 = 1,917.08 : x
  2. Step 2: Convert to fraction form
    3,408.94/4,704.10 = 1,917.08/x
  3. Step 3: Cross multiply
    3,408.94x = 4,704.10 × 1,917.08
  4. Step 4: Simplify right side
    3,408.94x = 9,018,136.03
  5. Step 5: Solve for x
    x = 9,018,136.03/3,408.94
  6. Step 6: Final answer
    x = 2,645.44

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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.