Home / 1,917.27-2,645.09-1,077.79

Finding the Fourth Proportional to 1,917.27, 2,645.09 and 1,077.79

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Solution

The fourth proportional to 1,917.27, 2,645.09 and 1,077.79 is: 1,486.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.27 : 2,645.09 = 1,077.79 : x
  2. Step 2: Convert to fraction form
    1,917.27/2,645.09 = 1,077.79/x
  3. Step 3: Cross multiply
    1,917.27x = 2,645.09 × 1,077.79
  4. Step 4: Simplify right side
    1,917.27x = 2,850,832.94
  5. Step 5: Solve for x
    x = 2,850,832.94/1,917.27
  6. Step 6: Final answer
    x = 1,486.92

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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.