Home / 3,015.68-4,159.20-2,020.64

Finding the Fourth Proportional to 3,015.68, 4,159.20 and 2,020.64

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Solution

The fourth proportional to 3,015.68, 4,159.20 and 2,020.64 is: 2,786.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.68 : 4,159.20 = 2,020.64 : x
  2. Step 2: Convert to fraction form
    3,015.68/4,159.20 = 2,020.64/x
  3. Step 3: Cross multiply
    3,015.68x = 4,159.20 × 2,020.64
  4. Step 4: Simplify right side
    3,015.68x = 8,404,245.89
  5. Step 5: Solve for x
    x = 8,404,245.89/3,015.68
  6. Step 6: Final answer
    x = 2,786.85

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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.