Home / 2,221.38-3,065.52-1,226.64

Finding the Fourth Proportional to 2,221.38, 3,065.52 and 1,226.64

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Solution

The fourth proportional to 2,221.38, 3,065.52 and 1,226.64 is: 1,692.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.38 : 3,065.52 = 1,226.64 : x
  2. Step 2: Convert to fraction form
    2,221.38/3,065.52 = 1,226.64/x
  3. Step 3: Cross multiply
    2,221.38x = 3,065.52 × 1,226.64
  4. Step 4: Simplify right side
    2,221.38x = 3,760,289.45
  5. Step 5: Solve for x
    x = 3,760,289.45/2,221.38
  6. Step 6: Final answer
    x = 1,692.77

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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.