Home / 2,895.21-3,997.31-2,221.79

Finding the Fourth Proportional to 2,895.21, 3,997.31 and 2,221.79

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Solution

The fourth proportional to 2,895.21, 3,997.31 and 2,221.79 is: 3,067.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,895.21 : 3,997.31 = 2,221.79 : x
  2. Step 2: Convert to fraction form
    2,895.21/3,997.31 = 2,221.79/x
  3. Step 3: Cross multiply
    2,895.21x = 3,997.31 × 2,221.79
  4. Step 4: Simplify right side
    2,895.21x = 8,881,152.29
  5. Step 5: Solve for x
    x = 8,881,152.29/2,895.21
  6. Step 6: Final answer
    x = 3,067.53

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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.