Home / 1,628.36-2,245.63-1,222.97

Finding the Fourth Proportional to 1,628.36, 2,245.63 and 1,222.97

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Solution

The fourth proportional to 1,628.36, 2,245.63 and 1,222.97 is: 1,686.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.36 : 2,245.63 = 1,222.97 : x
  2. Step 2: Convert to fraction form
    1,628.36/2,245.63 = 1,222.97/x
  3. Step 3: Cross multiply
    1,628.36x = 2,245.63 × 1,222.97
  4. Step 4: Simplify right side
    1,628.36x = 2,746,348.52
  5. Step 5: Solve for x
    x = 2,746,348.52/1,628.36
  6. Step 6: Final answer
    x = 1,686.57

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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.