Home / 1,284.98-1,782.07-1,204.79

Finding the Fourth Proportional to 1,284.98, 1,782.07 and 1,204.79

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Solution

The fourth proportional to 1,284.98, 1,782.07 and 1,204.79 is: 1,670.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.98 : 1,782.07 = 1,204.79 : x
  2. Step 2: Convert to fraction form
    1,284.98/1,782.07 = 1,204.79/x
  3. Step 3: Cross multiply
    1,284.98x = 1,782.07 × 1,204.79
  4. Step 4: Simplify right side
    1,284.98x = 2,147,020.12
  5. Step 5: Solve for x
    x = 2,147,020.12/1,284.98
  6. Step 6: Final answer
    x = 1,670.86

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.