Home / 2,786.10-4,180.05-1,862.70

Finding the Fourth Proportional to 2,786.10, 4,180.05 and 1,862.70

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Solution

The fourth proportional to 2,786.10, 4,180.05 and 1,862.70 is: 2,794.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.10 : 4,180.05 = 1,862.70 : x
  2. Step 2: Convert to fraction form
    2,786.10/4,180.05 = 1,862.70/x
  3. Step 3: Cross multiply
    2,786.10x = 4,180.05 × 1,862.70
  4. Step 4: Simplify right side
    2,786.10x = 7,786,179.14
  5. Step 5: Solve for x
    x = 7,786,179.14/2,786.10
  6. Step 6: Final answer
    x = 2,794.65

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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.