Home / 8,618.75-11,889.87-5,633.48

Finding the Fourth Proportional to 8,618.75, 11,889.87 and 5,633.48

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Solution

The fourth proportional to 8,618.75, 11,889.87 and 5,633.48 is: 7,771.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.75 : 11,889.87 = 5,633.48 : x
  2. Step 2: Convert to fraction form
    8,618.75/11,889.87 = 5,633.48/x
  3. Step 3: Cross multiply
    8,618.75x = 11,889.87 × 5,633.48
  4. Step 4: Simplify right side
    8,618.75x = 66,981,344.85
  5. Step 5: Solve for x
    x = 66,981,344.85/8,618.75
  6. Step 6: Final answer
    x = 7,771.58

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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.