Home / 3,121.06-4,301.93-2,212.87

Finding the Fourth Proportional to 3,121.06, 4,301.93 and 2,212.87

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Solution

The fourth proportional to 3,121.06, 4,301.93 and 2,212.87 is: 3,050.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.06 : 4,301.93 = 2,212.87 : x
  2. Step 2: Convert to fraction form
    3,121.06/4,301.93 = 2,212.87/x
  3. Step 3: Cross multiply
    3,121.06x = 4,301.93 × 2,212.87
  4. Step 4: Simplify right side
    3,121.06x = 9,519,590.02
  5. Step 5: Solve for x
    x = 9,519,590.02/3,121.06
  6. Step 6: Final answer
    x = 3,050.12

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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.