Home / 3,019.14-4,162.05-2,120.15

Finding the Fourth Proportional to 3,019.14, 4,162.05 and 2,120.15

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Solution

The fourth proportional to 3,019.14, 4,162.05 and 2,120.15 is: 2,922.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,019.14 : 4,162.05 = 2,120.15 : x
  2. Step 2: Convert to fraction form
    3,019.14/4,162.05 = 2,120.15/x
  3. Step 3: Cross multiply
    3,019.14x = 4,162.05 × 2,120.15
  4. Step 4: Simplify right side
    3,019.14x = 8,824,180.71
  5. Step 5: Solve for x
    x = 8,824,180.71/3,019.14
  6. Step 6: Final answer
    x = 2,922.75

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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.