Home / 1,976.20-2,726.56-1,277.96

Finding the Fourth Proportional to 1,976.20, 2,726.56 and 1,277.96

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Solution

The fourth proportional to 1,976.20, 2,726.56 and 1,277.96 is: 1,763.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.20 : 2,726.56 = 1,277.96 : x
  2. Step 2: Convert to fraction form
    1,976.20/2,726.56 = 1,277.96/x
  3. Step 3: Cross multiply
    1,976.20x = 2,726.56 × 1,277.96
  4. Step 4: Simplify right side
    1,976.20x = 3,484,434.62
  5. Step 5: Solve for x
    x = 3,484,434.62/1,976.20
  6. Step 6: Final answer
    x = 1,763.20

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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.