Home / 3,015.79-4,161.58-2,020.91

Finding the Fourth Proportional to 3,015.79, 4,161.58 and 2,020.91

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Solution

The fourth proportional to 3,015.79, 4,161.58 and 2,020.91 is: 2,788.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.79 : 4,161.58 = 2,020.91 : x
  2. Step 2: Convert to fraction form
    3,015.79/4,161.58 = 2,020.91/x
  3. Step 3: Cross multiply
    3,015.79x = 4,161.58 × 2,020.91
  4. Step 4: Simplify right side
    3,015.79x = 8,410,152.78
  5. Step 5: Solve for x
    x = 8,410,152.78/3,015.79
  6. Step 6: Final answer
    x = 2,788.71

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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.