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Finding the Fourth Proportional to 8,627.92, 12,940.56 and 2,783.92

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Solution

The fourth proportional to 8,627.92, 12,940.56 and 2,783.92 is: 4,175.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,627.92 : 12,940.56 = 2,783.92 : x
  2. Step 2: Convert to fraction form
    8,627.92/12,940.56 = 2,783.92/x
  3. Step 3: Cross multiply
    8,627.92x = 12,940.56 × 2,783.92
  4. Step 4: Simplify right side
    8,627.92x = 36,025,483.80
  5. Step 5: Solve for x
    x = 36,025,483.80/8,627.92
  6. Step 6: Final answer
    x = 4,175.45

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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.