Home / 1,940.85-2,678.27-1,101.63

Finding the Fourth Proportional to 1,940.85, 2,678.27 and 1,101.63

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Solution

The fourth proportional to 1,940.85, 2,678.27 and 1,101.63 is: 1,520.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.85 : 2,678.27 = 1,101.63 : x
  2. Step 2: Convert to fraction form
    1,940.85/2,678.27 = 1,101.63/x
  3. Step 3: Cross multiply
    1,940.85x = 2,678.27 × 1,101.63
  4. Step 4: Simplify right side
    1,940.85x = 2,950,462.58
  5. Step 5: Solve for x
    x = 2,950,462.58/1,940.85
  6. Step 6: Final answer
    x = 1,520.19

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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.