Home / 3,109.04-4,290.22-1,974.62

Finding the Fourth Proportional to 3,109.04, 4,290.22 and 1,974.62

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Solution

The fourth proportional to 3,109.04, 4,290.22 and 1,974.62 is: 2,724.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.04 : 4,290.22 = 1,974.62 : x
  2. Step 2: Convert to fraction form
    3,109.04/4,290.22 = 1,974.62/x
  3. Step 3: Cross multiply
    3,109.04x = 4,290.22 × 1,974.62
  4. Step 4: Simplify right side
    3,109.04x = 8,471,532.77
  5. Step 5: Solve for x
    x = 8,471,532.77/3,109.04
  6. Step 6: Final answer
    x = 2,724.81

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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.