Home / 3,078.23-4,241.81-2,191.55

Finding the Fourth Proportional to 3,078.23, 4,241.81 and 2,191.55

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Solution

The fourth proportional to 3,078.23, 4,241.81 and 2,191.55 is: 3,019.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.23 : 4,241.81 = 2,191.55 : x
  2. Step 2: Convert to fraction form
    3,078.23/4,241.81 = 2,191.55/x
  3. Step 3: Cross multiply
    3,078.23x = 4,241.81 × 2,191.55
  4. Step 4: Simplify right side
    3,078.23x = 9,296,122.98
  5. Step 5: Solve for x
    x = 9,296,122.98/3,078.23
  6. Step 6: Final answer
    x = 3,019.96

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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.