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Finding the Fourth Proportional to 8,633.56, 11,910 and 5,450.80

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Solution

The fourth proportional to 8,633.56, 11,910 and 5,450.80 is: 7,519.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,633.56 : 11,910 = 5,450.80 : x
  2. Step 2: Convert to fraction form
    8,633.56/11,910 = 5,450.80/x
  3. Step 3: Cross multiply
    8,633.56x = 11,910 × 5,450.80
  4. Step 4: Simplify right side
    8,633.56x = 64,919,028
  5. Step 5: Solve for x
    x = 64,919,028/8,633.56
  6. Step 6: Final answer
    x = 7,519.38

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1.5x scale

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.