Home / 3,121.86-4,682.79-1,173.54

Finding the Fourth Proportional to 3,121.86, 4,682.79 and 1,173.54

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Solution

The fourth proportional to 3,121.86, 4,682.79 and 1,173.54 is: 1,760.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.86 : 4,682.79 = 1,173.54 : x
  2. Step 2: Convert to fraction form
    3,121.86/4,682.79 = 1,173.54/x
  3. Step 3: Cross multiply
    3,121.86x = 4,682.79 × 1,173.54
  4. Step 4: Simplify right side
    3,121.86x = 5,495,441.38
  5. Step 5: Solve for x
    x = 5,495,441.38/3,121.86
  6. Step 6: Final answer
    x = 1,760.31

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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.