Home / 1,975.98-2,727.63-1,189.88

Finding the Fourth Proportional to 1,975.98, 2,727.63 and 1,189.88

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Solution

The fourth proportional to 1,975.98, 2,727.63 and 1,189.88 is: 1,642.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.98 : 2,727.63 = 1,189.88 : x
  2. Step 2: Convert to fraction form
    1,975.98/2,727.63 = 1,189.88/x
  3. Step 3: Cross multiply
    1,975.98x = 2,727.63 × 1,189.88
  4. Step 4: Simplify right side
    1,975.98x = 3,245,538.75
  5. Step 5: Solve for x
    x = 3,245,538.75/1,975.98
  6. Step 6: Final answer
    x = 1,642.50

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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.