Home / 1,917.44-2,645.25-1,120.70

Finding the Fourth Proportional to 1,917.44, 2,645.25 and 1,120.70

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Solution

The fourth proportional to 1,917.44, 2,645.25 and 1,120.70 is: 1,546.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.44 : 2,645.25 = 1,120.70 : x
  2. Step 2: Convert to fraction form
    1,917.44/2,645.25 = 1,120.70/x
  3. Step 3: Cross multiply
    1,917.44x = 2,645.25 × 1,120.70
  4. Step 4: Simplify right side
    1,917.44x = 2,964,518.45
  5. Step 5: Solve for x
    x = 2,964,518.45/1,917.44
  6. Step 6: Final answer
    x = 1,546.09

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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.