Home / 3,081.78-4,254.26-1,964.23

Finding the Fourth Proportional to 3,081.78, 4,254.26 and 1,964.23

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Solution

The fourth proportional to 3,081.78, 4,254.26 and 1,964.23 is: 2,711.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.78 : 4,254.26 = 1,964.23 : x
  2. Step 2: Convert to fraction form
    3,081.78/4,254.26 = 1,964.23/x
  3. Step 3: Cross multiply
    3,081.78x = 4,254.26 × 1,964.23
  4. Step 4: Simplify right side
    3,081.78x = 8,356,324.66
  5. Step 5: Solve for x
    x = 8,356,324.66/3,081.78
  6. Step 6: Final answer
    x = 2,711.53

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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.