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Finding the Fourth Proportional to 7,679.65, 11,519.49 and 2,133.29

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Solution

The fourth proportional to 7,679.65, 11,519.49 and 2,133.29 is: 3,199.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.65 : 11,519.49 = 2,133.29 : x
  2. Step 2: Convert to fraction form
    7,679.65/11,519.49 = 2,133.29/x
  3. Step 3: Cross multiply
    7,679.65x = 11,519.49 × 2,133.29
  4. Step 4: Simplify right side
    7,679.65x = 24,574,412.82
  5. Step 5: Solve for x
    x = 24,574,412.82/7,679.65
  6. Step 6: Final answer
    x = 3,199.94

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Similar ratio
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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.