Home / 2,685.27-3,704.19-1,690.19

Finding the Fourth Proportional to 2,685.27, 3,704.19 and 1,690.19

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Solution

The fourth proportional to 2,685.27, 3,704.19 and 1,690.19 is: 2,331.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.27 : 3,704.19 = 1,690.19 : x
  2. Step 2: Convert to fraction form
    2,685.27/3,704.19 = 1,690.19/x
  3. Step 3: Cross multiply
    2,685.27x = 3,704.19 × 1,690.19
  4. Step 4: Simplify right side
    2,685.27x = 6,260,784.90
  5. Step 5: Solve for x
    x = 6,260,784.90/2,685.27
  6. Step 6: Final answer
    x = 2,331.53

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Half scale
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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.