Home / 1,942.09-2,680.91-1,840.30

Finding the Fourth Proportional to 1,942.09, 2,680.91 and 1,840.30

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Solution

The fourth proportional to 1,942.09, 2,680.91 and 1,840.30 is: 2,540.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.09 : 2,680.91 = 1,840.30 : x
  2. Step 2: Convert to fraction form
    1,942.09/2,680.91 = 1,840.30/x
  3. Step 3: Cross multiply
    1,942.09x = 2,680.91 × 1,840.30
  4. Step 4: Simplify right side
    1,942.09x = 4,933,669.47
  5. Step 5: Solve for x
    x = 4,933,669.47/1,942.09
  6. Step 6: Final answer
    x = 2,540.39

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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.