Home / 2,777.56-4,166.34-2,221.09

Finding the Fourth Proportional to 2,777.56, 4,166.34 and 2,221.09

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Solution

The fourth proportional to 2,777.56, 4,166.34 and 2,221.09 is: 3,331.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,777.56 : 4,166.34 = 2,221.09 : x
  2. Step 2: Convert to fraction form
    2,777.56/4,166.34 = 2,221.09/x
  3. Step 3: Cross multiply
    2,777.56x = 4,166.34 × 2,221.09
  4. Step 4: Simplify right side
    2,777.56x = 9,253,816.11
  5. Step 5: Solve for x
    x = 9,253,816.11/2,777.56
  6. Step 6: Final answer
    x = 3,331.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.