Home / 1,986.42-2,975.65-1,195.34

Finding the Fourth Proportional to 1,986.42, 2,975.65 and 1,195.34

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Solution

The fourth proportional to 1,986.42, 2,975.65 and 1,195.34 is: 1,790.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.42 : 2,975.65 = 1,195.34 : x
  2. Step 2: Convert to fraction form
    1,986.42/2,975.65 = 1,195.34/x
  3. Step 3: Cross multiply
    1,986.42x = 2,975.65 × 1,195.34
  4. Step 4: Simplify right side
    1,986.42x = 3,556,892.62
  5. Step 5: Solve for x
    x = 3,556,892.62/1,986.42
  6. Step 6: Final answer
    x = 1,790.61

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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.