Home / 1,940.21-2,910.82-1,247.22

Finding the Fourth Proportional to 1,940.21, 2,910.82 and 1,247.22

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Solution

The fourth proportional to 1,940.21, 2,910.82 and 1,247.22 is: 1,871.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.21 : 2,910.82 = 1,247.22 : x
  2. Step 2: Convert to fraction form
    1,940.21/2,910.82 = 1,247.22/x
  3. Step 3: Cross multiply
    1,940.21x = 2,910.82 × 1,247.22
  4. Step 4: Simplify right side
    1,940.21x = 3,630,432.92
  5. Step 5: Solve for x
    x = 3,630,432.92/1,940.21
  6. Step 6: Final answer
    x = 1,871.15

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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.