Home / 8,620.43-11,889.99-5,081.13

Finding the Fourth Proportional to 8,620.43, 11,889.99 and 5,081.13

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Solution

The fourth proportional to 8,620.43, 11,889.99 and 5,081.13 is: 7,008.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.43 : 11,889.99 = 5,081.13 : x
  2. Step 2: Convert to fraction form
    8,620.43/11,889.99 = 5,081.13/x
  3. Step 3: Cross multiply
    8,620.43x = 11,889.99 × 5,081.13
  4. Step 4: Simplify right side
    8,620.43x = 60,414,584.89
  5. Step 5: Solve for x
    x = 60,414,584.89/8,620.43
  6. Step 6: Final answer
    x = 7,008.31

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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.