Home / 3,109.22-4,290.74-1,711.97

Finding the Fourth Proportional to 3,109.22, 4,290.74 and 1,711.97

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Solution

The fourth proportional to 3,109.22, 4,290.74 and 1,711.97 is: 2,362.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.22 : 4,290.74 = 1,711.97 : x
  2. Step 2: Convert to fraction form
    3,109.22/4,290.74 = 1,711.97/x
  3. Step 3: Cross multiply
    3,109.22x = 4,290.74 × 1,711.97
  4. Step 4: Simplify right side
    3,109.22x = 7,345,610.65
  5. Step 5: Solve for x
    x = 7,345,610.65/3,109.22
  6. Step 6: Final answer
    x = 2,362.53

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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.