Home / 2,685.90-4,028.85-1,811.10

Finding the Fourth Proportional to 2,685.90, 4,028.85 and 1,811.10

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Solution

The fourth proportional to 2,685.90, 4,028.85 and 1,811.10 is: 2,716.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.90 : 4,028.85 = 1,811.10 : x
  2. Step 2: Convert to fraction form
    2,685.90/4,028.85 = 1,811.10/x
  3. Step 3: Cross multiply
    2,685.90x = 4,028.85 × 1,811.10
  4. Step 4: Simplify right side
    2,685.90x = 7,296,650.24
  5. Step 5: Solve for x
    x = 7,296,650.24/2,685.90
  6. Step 6: Final answer
    x = 2,716.65

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Similar ratio
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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.