Home / 3,112.89-4,289.88-2,227.15

Finding the Fourth Proportional to 3,112.89, 4,289.88 and 2,227.15

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Solution

The fourth proportional to 3,112.89, 4,289.88 and 2,227.15 is: 3,069.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.89 : 4,289.88 = 2,227.15 : x
  2. Step 2: Convert to fraction form
    3,112.89/4,289.88 = 2,227.15/x
  3. Step 3: Cross multiply
    3,112.89x = 4,289.88 × 2,227.15
  4. Step 4: Simplify right side
    3,112.89x = 9,554,206.24
  5. Step 5: Solve for x
    x = 9,554,206.24/3,112.89
  6. Step 6: Final answer
    x = 3,069.24

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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.