Home / 4,187.99-5,778.25-2,696.78

Finding the Fourth Proportional to 4,187.99, 5,778.25 and 2,696.78

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Solution

The fourth proportional to 4,187.99, 5,778.25 and 2,696.78 is: 3,720.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.99 : 5,778.25 = 2,696.78 : x
  2. Step 2: Convert to fraction form
    4,187.99/5,778.25 = 2,696.78/x
  3. Step 3: Cross multiply
    4,187.99x = 5,778.25 × 2,696.78
  4. Step 4: Simplify right side
    4,187.99x = 15,582,626.66
  5. Step 5: Solve for x
    x = 15,582,626.66/4,187.99
  6. Step 6: Final answer
    x = 3,720.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.