Home / 3,101.22-4,285.31-2,215.49

Finding the Fourth Proportional to 3,101.22, 4,285.31 and 2,215.49

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Solution

The fourth proportional to 3,101.22, 4,285.31 and 2,215.49 is: 3,061.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.22 : 4,285.31 = 2,215.49 : x
  2. Step 2: Convert to fraction form
    3,101.22/4,285.31 = 2,215.49/x
  3. Step 3: Cross multiply
    3,101.22x = 4,285.31 × 2,215.49
  4. Step 4: Simplify right side
    3,101.22x = 9,494,028.95
  5. Step 5: Solve for x
    x = 9,494,028.95/3,101.22
  6. Step 6: Final answer
    x = 3,061.39

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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.