Home / 2,229.84-3,077.06-1,221.36

Finding the Fourth Proportional to 2,229.84, 3,077.06 and 1,221.36

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Solution

The fourth proportional to 2,229.84, 3,077.06 and 1,221.36 is: 1,685.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.84 : 3,077.06 = 1,221.36 : x
  2. Step 2: Convert to fraction form
    2,229.84/3,077.06 = 1,221.36/x
  3. Step 3: Cross multiply
    2,229.84x = 3,077.06 × 1,221.36
  4. Step 4: Simplify right side
    2,229.84x = 3,758,198.00
  5. Step 5: Solve for x
    x = 3,758,198.00/2,229.84
  6. Step 6: Final answer
    x = 1,685.41

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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.