Home / 8,109.91-11,191.74-4,879.25

Finding the Fourth Proportional to 8,109.91, 11,191.74 and 4,879.25

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Solution

The fourth proportional to 8,109.91, 11,191.74 and 4,879.25 is: 6,733.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.91 : 11,191.74 = 4,879.25 : x
  2. Step 2: Convert to fraction form
    8,109.91/11,191.74 = 4,879.25/x
  3. Step 3: Cross multiply
    8,109.91x = 11,191.74 × 4,879.25
  4. Step 4: Simplify right side
    8,109.91x = 54,607,328.06
  5. Step 5: Solve for x
    x = 54,607,328.06/8,109.91
  6. Step 6: Final answer
    x = 6,733.41

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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.