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Finding the Fourth Proportional to 8,879.43, 12,164.69 and 8,547.06

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Solution

The fourth proportional to 8,879.43, 12,164.69 and 8,547.06 is: 11,709.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.43 : 12,164.69 = 8,547.06 : x
  2. Step 2: Convert to fraction form
    8,879.43/12,164.69 = 8,547.06/x
  3. Step 3: Cross multiply
    8,879.43x = 12,164.69 × 8,547.06
  4. Step 4: Simplify right side
    8,879.43x = 103,972,292.58
  5. Step 5: Solve for x
    x = 103,972,292.58/8,879.43
  6. Step 6: Final answer
    x = 11,709.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.