Home / 7,538.09-11,306.97-1,991.79

Finding the Fourth Proportional to 7,538.09, 11,306.97 and 1,991.79

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Solution

The fourth proportional to 7,538.09, 11,306.97 and 1,991.79 is: 2,987.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,538.09 : 11,306.97 = 1,991.79 : x
  2. Step 2: Convert to fraction form
    7,538.09/11,306.97 = 1,991.79/x
  3. Step 3: Cross multiply
    7,538.09x = 11,306.97 × 1,991.79
  4. Step 4: Simplify right side
    7,538.09x = 22,521,109.78
  5. Step 5: Solve for x
    x = 22,521,109.78/7,538.09
  6. Step 6: Final answer
    x = 2,987.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.