Home / 1,974.67-2,723.25-1,228.39

Finding the Fourth Proportional to 1,974.67, 2,723.25 and 1,228.39

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Solution

The fourth proportional to 1,974.67, 2,723.25 and 1,228.39 is: 1,694.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.67 : 2,723.25 = 1,228.39 : x
  2. Step 2: Convert to fraction form
    1,974.67/2,723.25 = 1,228.39/x
  3. Step 3: Cross multiply
    1,974.67x = 2,723.25 × 1,228.39
  4. Step 4: Simplify right side
    1,974.67x = 3,345,213.07
  5. Step 5: Solve for x
    x = 3,345,213.07/1,974.67
  6. Step 6: Final answer
    x = 1,694.06

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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.