Home / 2,776.68-4,162.97-1,680.78

Finding the Fourth Proportional to 2,776.68, 4,162.97 and 1,680.78

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Solution

The fourth proportional to 2,776.68, 4,162.97 and 1,680.78 is: 2,519.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.68 : 4,162.97 = 1,680.78 : x
  2. Step 2: Convert to fraction form
    2,776.68/4,162.97 = 1,680.78/x
  3. Step 3: Cross multiply
    2,776.68x = 4,162.97 × 1,680.78
  4. Step 4: Simplify right side
    2,776.68x = 6,997,028.31
  5. Step 5: Solve for x
    x = 6,997,028.31/2,776.68
  6. Step 6: Final answer
    x = 2,519.93

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1.5x scale

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.