Home / 1,778.16-2,668.07-1,119.88

Finding the Fourth Proportional to 1,778.16, 2,668.07 and 1,119.88

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Solution

The fourth proportional to 1,778.16, 2,668.07 and 1,119.88 is: 1,680.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.16 : 2,668.07 = 1,119.88 : x
  2. Step 2: Convert to fraction form
    1,778.16/2,668.07 = 1,119.88/x
  3. Step 3: Cross multiply
    1,778.16x = 2,668.07 × 1,119.88
  4. Step 4: Simplify right side
    1,778.16x = 2,987,924.37
  5. Step 5: Solve for x
    x = 2,987,924.37/1,778.16
  6. Step 6: Final answer
    x = 1,680.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.