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Finding the Fourth Proportional to 7,479.68, 11,221.68 and 3,096.32

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Solution

The fourth proportional to 7,479.68, 11,221.68 and 3,096.32 is: 4,645.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.68 : 11,221.68 = 3,096.32 : x
  2. Step 2: Convert to fraction form
    7,479.68/11,221.68 = 3,096.32/x
  3. Step 3: Cross multiply
    7,479.68x = 11,221.68 × 3,096.32
  4. Step 4: Simplify right side
    7,479.68x = 34,745,912.22
  5. Step 5: Solve for x
    x = 34,745,912.22/7,479.68
  6. Step 6: Final answer
    x = 4,645.37

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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.