Home / 2,806.80-4,215.78-1,767.48

Finding the Fourth Proportional to 2,806.80, 4,215.78 and 1,767.48

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Solution

The fourth proportional to 2,806.80, 4,215.78 and 1,767.48 is: 2,654.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.80 : 4,215.78 = 1,767.48 : x
  2. Step 2: Convert to fraction form
    2,806.80/4,215.78 = 1,767.48/x
  3. Step 3: Cross multiply
    2,806.80x = 4,215.78 × 1,767.48
  4. Step 4: Simplify right side
    2,806.80x = 7,451,306.83
  5. Step 5: Solve for x
    x = 7,451,306.83/2,806.80
  6. Step 6: Final answer
    x = 2,654.73

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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.