Home / 1,940.19-2,910.15-1,115.88

Finding the Fourth Proportional to 1,940.19, 2,910.15 and 1,115.88

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Solution

The fourth proportional to 1,940.19, 2,910.15 and 1,115.88 is: 1,673.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.19 : 2,910.15 = 1,115.88 : x
  2. Step 2: Convert to fraction form
    1,940.19/2,910.15 = 1,115.88/x
  3. Step 3: Cross multiply
    1,940.19x = 2,910.15 × 1,115.88
  4. Step 4: Simplify right side
    1,940.19x = 3,247,378.18
  5. Step 5: Solve for x
    x = 3,247,378.18/1,940.19
  6. Step 6: Final answer
    x = 1,673.74

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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.