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Finding the Fourth Proportional to 8,519.58, 12,779.37 and 7,966.15

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Solution

The fourth proportional to 8,519.58, 12,779.37 and 7,966.15 is: 11,949.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.58 : 12,779.37 = 7,966.15 : x
  2. Step 2: Convert to fraction form
    8,519.58/12,779.37 = 7,966.15/x
  3. Step 3: Cross multiply
    8,519.58x = 12,779.37 × 7,966.15
  4. Step 4: Simplify right side
    8,519.58x = 101,802,346.38
  5. Step 5: Solve for x
    x = 101,802,346.38/8,519.58
  6. Step 6: Final answer
    x = 11,949.22

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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.