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Finding the Fourth Proportional to 8,633.59, 11,917.04 and 6,641.80

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Solution

The fourth proportional to 8,633.59, 11,917.04 and 6,641.80 is: 9,167.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,633.59 : 11,917.04 = 6,641.80 : x
  2. Step 2: Convert to fraction form
    8,633.59/11,917.04 = 6,641.80/x
  3. Step 3: Cross multiply
    8,633.59x = 11,917.04 × 6,641.80
  4. Step 4: Simplify right side
    8,633.59x = 79,150,533.27
  5. Step 5: Solve for x
    x = 79,150,533.27/8,633.59
  6. Step 6: Final answer
    x = 9,167.75

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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.