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Finding the Fourth Proportional to 8,641.44, 12,961.92 and 3,093.24

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Solution

The fourth proportional to 8,641.44, 12,961.92 and 3,093.24 is: 4,639.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.44 : 12,961.92 = 3,093.24 : x
  2. Step 2: Convert to fraction form
    8,641.44/12,961.92 = 3,093.24/x
  3. Step 3: Cross multiply
    8,641.44x = 12,961.92 × 3,093.24
  4. Step 4: Simplify right side
    8,641.44x = 40,094,329.42
  5. Step 5: Solve for x
    x = 40,094,329.42/8,641.44
  6. Step 6: Final answer
    x = 4,639.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.