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Finding the Fourth Proportional to 8,641.05, 11,922.98 and 5,104.86

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Solution

The fourth proportional to 8,641.05, 11,922.98 and 5,104.86 is: 7,043.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.05 : 11,922.98 = 5,104.86 : x
  2. Step 2: Convert to fraction form
    8,641.05/11,922.98 = 5,104.86/x
  3. Step 3: Cross multiply
    8,641.05x = 11,922.98 × 5,104.86
  4. Step 4: Simplify right side
    8,641.05x = 60,865,118.16
  5. Step 5: Solve for x
    x = 60,865,118.16/8,641.05
  6. Step 6: Final answer
    x = 7,043.72

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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.