Home / 8,121.22-11,178.39-5,759.26

Finding the Fourth Proportional to 8,121.22, 11,178.39 and 5,759.26

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Solution

The fourth proportional to 8,121.22, 11,178.39 and 5,759.26 is: 7,927.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.22 : 11,178.39 = 5,759.26 : x
  2. Step 2: Convert to fraction form
    8,121.22/11,178.39 = 5,759.26/x
  3. Step 3: Cross multiply
    8,121.22x = 11,178.39 × 5,759.26
  4. Step 4: Simplify right side
    8,121.22x = 64,379,254.39
  5. Step 5: Solve for x
    x = 64,379,254.39/8,121.22
  6. Step 6: Final answer
    x = 7,927.29

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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.