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Finding the Fourth Proportional to 7,489.82, 11,217.22 and 5,919.28

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Solution

The fourth proportional to 7,489.82, 11,217.22 and 5,919.28 is: 8,865.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,489.82 : 11,217.22 = 5,919.28 : x
  2. Step 2: Convert to fraction form
    7,489.82/11,217.22 = 5,919.28/x
  3. Step 3: Cross multiply
    7,489.82x = 11,217.22 × 5,919.28
  4. Step 4: Simplify right side
    7,489.82x = 66,397,866.00
  5. Step 5: Solve for x
    x = 66,397,866.00/7,489.82
  6. Step 6: Final answer
    x = 8,865.08

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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.