Home / 2,911.87-4,364.79-2,119.33

Finding the Fourth Proportional to 2,911.87, 4,364.79 and 2,119.33

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Solution

The fourth proportional to 2,911.87, 4,364.79 and 2,119.33 is: 3,176.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.87 : 4,364.79 = 2,119.33 : x
  2. Step 2: Convert to fraction form
    2,911.87/4,364.79 = 2,119.33/x
  3. Step 3: Cross multiply
    2,911.87x = 4,364.79 × 2,119.33
  4. Step 4: Simplify right side
    2,911.87x = 9,250,430.39
  5. Step 5: Solve for x
    x = 9,250,430.39/2,911.87
  6. Step 6: Final answer
    x = 3,176.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.