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Finding the Fourth Proportional to 2,940.86, 4,057.81 and 1,745.63

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Solution

The fourth proportional to 2,940.86, 4,057.81 and 1,745.63 is: 2,408.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.86 : 4,057.81 = 1,745.63 : x
  2. Step 2: Convert to fraction form
    2,940.86/4,057.81 = 1,745.63/x
  3. Step 3: Cross multiply
    2,940.86x = 4,057.81 × 1,745.63
  4. Step 4: Simplify right side
    2,940.86x = 7,083,440.65
  5. Step 5: Solve for x
    x = 7,083,440.65/2,940.86
  6. Step 6: Final answer
    x = 2,408.63

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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.