Home / 3,114.21-4,288.23-2,778.06

Finding the Fourth Proportional to 3,114.21, 4,288.23 and 2,778.06

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Solution

The fourth proportional to 3,114.21, 4,288.23 and 2,778.06 is: 3,825.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,114.21 : 4,288.23 = 2,778.06 : x
  2. Step 2: Convert to fraction form
    3,114.21/4,288.23 = 2,778.06/x
  3. Step 3: Cross multiply
    3,114.21x = 4,288.23 × 2,778.06
  4. Step 4: Simplify right side
    3,114.21x = 11,912,960.23
  5. Step 5: Solve for x
    x = 11,912,960.23/3,114.21
  6. Step 6: Final answer
    x = 3,825.36

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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.