Home / 1,917.73-2,646.23-1,078.34

Finding the Fourth Proportional to 1,917.73, 2,646.23 and 1,078.34

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Solution

The fourth proportional to 1,917.73, 2,646.23 and 1,078.34 is: 1,487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.73 : 2,646.23 = 1,078.34 : x
  2. Step 2: Convert to fraction form
    1,917.73/2,646.23 = 1,078.34/x
  3. Step 3: Cross multiply
    1,917.73x = 2,646.23 × 1,078.34
  4. Step 4: Simplify right side
    1,917.73x = 2,853,517.04
  5. Step 5: Solve for x
    x = 2,853,517.04/1,917.73
  6. Step 6: Final answer
    x = 1,487.97

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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.