Home / 2,221.85-3,066.14-1,227.20

Finding the Fourth Proportional to 2,221.85, 3,066.14 and 1,227.20

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Solution

The fourth proportional to 2,221.85, 3,066.14 and 1,227.20 is: 1,693.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.85 : 3,066.14 = 1,227.20 : x
  2. Step 2: Convert to fraction form
    2,221.85/3,066.14 = 1,227.20/x
  3. Step 3: Cross multiply
    2,221.85x = 3,066.14 × 1,227.20
  4. Step 4: Simplify right side
    2,221.85x = 3,762,745.54
  5. Step 5: Solve for x
    x = 3,762,745.54/2,221.85
  6. Step 6: Final answer
    x = 1,693.52

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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.