Home / 3,072.80-4,241.40-2,025.20

Finding the Fourth Proportional to 3,072.80, 4,241.40 and 2,025.20

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Solution

The fourth proportional to 3,072.80, 4,241.40 and 2,025.20 is: 2,795.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.80 : 4,241.40 = 2,025.20 : x
  2. Step 2: Convert to fraction form
    3,072.80/4,241.40 = 2,025.20/x
  3. Step 3: Cross multiply
    3,072.80x = 4,241.40 × 2,025.20
  4. Step 4: Simplify right side
    3,072.80x = 8,589,683.28
  5. Step 5: Solve for x
    x = 8,589,683.28/3,072.80
  6. Step 6: Final answer
    x = 2,795.39

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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.