Home / 3,161.39-4,362.78-1,745.15

Finding the Fourth Proportional to 3,161.39, 4,362.78 and 1,745.15

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Solution

The fourth proportional to 3,161.39, 4,362.78 and 1,745.15 is: 2,408.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.39 : 4,362.78 = 1,745.15 : x
  2. Step 2: Convert to fraction form
    3,161.39/4,362.78 = 1,745.15/x
  3. Step 3: Cross multiply
    3,161.39x = 4,362.78 × 1,745.15
  4. Step 4: Simplify right side
    3,161.39x = 7,613,683.70
  5. Step 5: Solve for x
    x = 7,613,683.70/3,161.39
  6. Step 6: Final answer
    x = 2,408.34

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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.