Home / 3,109.09-4,290.54-1,711.84

Finding the Fourth Proportional to 3,109.09, 4,290.54 and 1,711.84

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Solution

The fourth proportional to 3,109.09, 4,290.54 and 1,711.84 is: 2,362.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.09 : 4,290.54 = 1,711.84 : x
  2. Step 2: Convert to fraction form
    3,109.09/4,290.54 = 1,711.84/x
  3. Step 3: Cross multiply
    3,109.09x = 4,290.54 × 1,711.84
  4. Step 4: Simplify right side
    3,109.09x = 7,344,696.54
  5. Step 5: Solve for x
    x = 7,344,696.54/3,109.09
  6. Step 6: Final answer
    x = 2,362.33

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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.