Home / 1,940.40-2,910.60-1,160.63

Finding the Fourth Proportional to 1,940.40, 2,910.60 and 1,160.63

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Solution

The fourth proportional to 1,940.40, 2,910.60 and 1,160.63 is: 1,740.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.40 : 2,910.60 = 1,160.63 : x
  2. Step 2: Convert to fraction form
    1,940.40/2,910.60 = 1,160.63/x
  3. Step 3: Cross multiply
    1,940.40x = 2,910.60 × 1,160.63
  4. Step 4: Simplify right side
    1,940.40x = 3,378,129.68
  5. Step 5: Solve for x
    x = 3,378,129.68/1,940.40
  6. Step 6: Final answer
    x = 1,740.95

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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.