Home / 3,111.56-4,291.07-2,270.94

Finding the Fourth Proportional to 3,111.56, 4,291.07 and 2,270.94

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Solution

The fourth proportional to 3,111.56, 4,291.07 and 2,270.94 is: 3,131.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.56 : 4,291.07 = 2,270.94 : x
  2. Step 2: Convert to fraction form
    3,111.56/4,291.07 = 2,270.94/x
  3. Step 3: Cross multiply
    3,111.56x = 4,291.07 × 2,270.94
  4. Step 4: Simplify right side
    3,111.56x = 9,744,750.20
  5. Step 5: Solve for x
    x = 9,744,750.20/3,111.56
  6. Step 6: Final answer
    x = 3,131.79

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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.