Home / 1,976.65-2,728.56-1,190.50

Finding the Fourth Proportional to 1,976.65, 2,728.56 and 1,190.50

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Solution

The fourth proportional to 1,976.65, 2,728.56 and 1,190.50 is: 1,643.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.65 : 2,728.56 = 1,190.50 : x
  2. Step 2: Convert to fraction form
    1,976.65/2,728.56 = 1,190.50/x
  3. Step 3: Cross multiply
    1,976.65x = 2,728.56 × 1,190.50
  4. Step 4: Simplify right side
    1,976.65x = 3,248,350.68
  5. Step 5: Solve for x
    x = 3,248,350.68/1,976.65
  6. Step 6: Final answer
    x = 1,643.36

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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.