Home / 2,786.23-4,176.33-1,119.70

Finding the Fourth Proportional to 2,786.23, 4,176.33 and 1,119.70

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Solution

The fourth proportional to 2,786.23, 4,176.33 and 1,119.70 is: 1,678.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.23 : 4,176.33 = 1,119.70 : x
  2. Step 2: Convert to fraction form
    2,786.23/4,176.33 = 1,119.70/x
  3. Step 3: Cross multiply
    2,786.23x = 4,176.33 × 1,119.70
  4. Step 4: Simplify right side
    2,786.23x = 4,676,236.70
  5. Step 5: Solve for x
    x = 4,676,236.70/2,786.23
  6. Step 6: Final answer
    x = 1,678.34

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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.