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Finding the Fourth Proportional to 8,612.49, 11,879.69 and 5,922.48

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Solution

The fourth proportional to 8,612.49, 11,879.69 and 5,922.48 is: 8,169.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.49 : 11,879.69 = 5,922.48 : x
  2. Step 2: Convert to fraction form
    8,612.49/11,879.69 = 5,922.48/x
  3. Step 3: Cross multiply
    8,612.49x = 11,879.69 × 5,922.48
  4. Step 4: Simplify right side
    8,612.49x = 70,357,196.82
  5. Step 5: Solve for x
    x = 70,357,196.82/8,612.49
  6. Step 6: Final answer
    x = 8,169.21

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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.