Home / 2,229.68-3,078.36-1,433.36

Finding the Fourth Proportional to 2,229.68, 3,078.36 and 1,433.36

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Solution

The fourth proportional to 2,229.68, 3,078.36 and 1,433.36 is: 1,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.68 : 3,078.36 = 1,433.36 : x
  2. Step 2: Convert to fraction form
    2,229.68/3,078.36 = 1,433.36/x
  3. Step 3: Cross multiply
    2,229.68x = 3,078.36 × 1,433.36
  4. Step 4: Simplify right side
    2,229.68x = 4,412,398.09
  5. Step 5: Solve for x
    x = 4,412,398.09/2,229.68
  6. Step 6: Final answer
    x = 1,978.94

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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.