Home / 2,771.48-3,821.10-2,268.20

Finding the Fourth Proportional to 2,771.48, 3,821.10 and 2,268.20

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Solution

The fourth proportional to 2,771.48, 3,821.10 and 2,268.20 is: 3,127.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.48 : 3,821.10 = 2,268.20 : x
  2. Step 2: Convert to fraction form
    2,771.48/3,821.10 = 2,268.20/x
  3. Step 3: Cross multiply
    2,771.48x = 3,821.10 × 2,268.20
  4. Step 4: Simplify right side
    2,771.48x = 8,667,019.02
  5. Step 5: Solve for x
    x = 8,667,019.02/2,771.48
  6. Step 6: Final answer
    x = 3,127.22

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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.