Home / 1,976.67-2,726.66-1,278.05

Finding the Fourth Proportional to 1,976.67, 2,726.66 and 1,278.05

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Solution

The fourth proportional to 1,976.67, 2,726.66 and 1,278.05 is: 1,762.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.67 : 2,726.66 = 1,278.05 : x
  2. Step 2: Convert to fraction form
    1,976.67/2,726.66 = 1,278.05/x
  3. Step 3: Cross multiply
    1,976.67x = 2,726.66 × 1,278.05
  4. Step 4: Simplify right side
    1,976.67x = 3,484,797.37
  5. Step 5: Solve for x
    x = 3,484,797.37/1,976.67
  6. Step 6: Final answer
    x = 1,762.96

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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.