Home / 3,380.27-4,661.75-2,121.45

Finding the Fourth Proportional to 3,380.27, 4,661.75 and 2,121.45

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Solution

The fourth proportional to 3,380.27, 4,661.75 and 2,121.45 is: 2,925.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.27 : 4,661.75 = 2,121.45 : x
  2. Step 2: Convert to fraction form
    3,380.27/4,661.75 = 2,121.45/x
  3. Step 3: Cross multiply
    3,380.27x = 4,661.75 × 2,121.45
  4. Step 4: Simplify right side
    3,380.27x = 9,889,658.93
  5. Step 5: Solve for x
    x = 9,889,658.93/3,380.27
  6. Step 6: Final answer
    x = 2,925.71

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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.