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Finding the Fourth Proportional to 8,783.78, 13,180.81 and 3,240.98

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Solution

The fourth proportional to 8,783.78, 13,180.81 and 3,240.98 is: 4,863.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.78 : 13,180.81 = 3,240.98 : x
  2. Step 2: Convert to fraction form
    8,783.78/13,180.81 = 3,240.98/x
  3. Step 3: Cross multiply
    8,783.78x = 13,180.81 × 3,240.98
  4. Step 4: Simplify right side
    8,783.78x = 42,718,723.09
  5. Step 5: Solve for x
    x = 42,718,723.09/8,783.78
  6. Step 6: Final answer
    x = 4,863.37

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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.