Home / 8,623.43-11,905.07-8,119.20

Finding the Fourth Proportional to 8,623.43, 11,905.07 and 8,119.20

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Solution

The fourth proportional to 8,623.43, 11,905.07 and 8,119.20 is: 11,208.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.43 : 11,905.07 = 8,119.20 : x
  2. Step 2: Convert to fraction form
    8,623.43/11,905.07 = 8,119.20/x
  3. Step 3: Cross multiply
    8,623.43x = 11,905.07 × 8,119.20
  4. Step 4: Simplify right side
    8,623.43x = 96,659,603.75
  5. Step 5: Solve for x
    x = 96,659,603.75/8,623.43
  6. Step 6: Final answer
    x = 11,208.96

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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.