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Finding the Fourth Proportional to 8,633.79, 11,845.44 and 8,215.83

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Solution

The fourth proportional to 8,633.79, 11,845.44 and 8,215.83 is: 11,272.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,633.79 : 11,845.44 = 8,215.83 : x
  2. Step 2: Convert to fraction form
    8,633.79/11,845.44 = 8,215.83/x
  3. Step 3: Cross multiply
    8,633.79x = 11,845.44 × 8,215.83
  4. Step 4: Simplify right side
    8,633.79x = 97,320,121.32
  5. Step 5: Solve for x
    x = 97,320,121.32/8,633.79
  6. Step 6: Final answer
    x = 11,272.00

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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.