Home / 7,538.12-11,306.21-1,991.91

Finding the Fourth Proportional to 7,538.12, 11,306.21 and 1,991.91

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Solution

The fourth proportional to 7,538.12, 11,306.21 and 1,991.91 is: 2,987.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,538.12 : 11,306.21 = 1,991.91 : x
  2. Step 2: Convert to fraction form
    7,538.12/11,306.21 = 1,991.91/x
  3. Step 3: Cross multiply
    7,538.12x = 11,306.21 × 1,991.91
  4. Step 4: Simplify right side
    7,538.12x = 22,520,942.80
  5. Step 5: Solve for x
    x = 22,520,942.80/7,538.12
  6. Step 6: Final answer
    x = 2,987.61

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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.