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Finding the Fourth Proportional to 8,625.92, 11,899.56 and 5,641.88

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Solution

The fourth proportional to 8,625.92, 11,899.56 and 5,641.88 is: 7,783.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.92 : 11,899.56 = 5,641.88 : x
  2. Step 2: Convert to fraction form
    8,625.92/11,899.56 = 5,641.88/x
  3. Step 3: Cross multiply
    8,625.92x = 11,899.56 × 5,641.88
  4. Step 4: Simplify right side
    8,625.92x = 67,135,889.57
  5. Step 5: Solve for x
    x = 67,135,889.57/8,625.92
  6. Step 6: Final answer
    x = 7,783.04

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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.