Home / 1,783.27-2,458.62-1,222.78

Finding the Fourth Proportional to 1,783.27, 2,458.62 and 1,222.78

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Solution

The fourth proportional to 1,783.27, 2,458.62 and 1,222.78 is: 1,685.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.27 : 2,458.62 = 1,222.78 : x
  2. Step 2: Convert to fraction form
    1,783.27/2,458.62 = 1,222.78/x
  3. Step 3: Cross multiply
    1,783.27x = 2,458.62 × 1,222.78
  4. Step 4: Simplify right side
    1,783.27x = 3,006,351.36
  5. Step 5: Solve for x
    x = 3,006,351.36/1,783.27
  6. Step 6: Final answer
    x = 1,685.86

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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.