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Finding the Fourth Proportional to 8,783.82, 13,170.42 and 3,440.63

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Solution

The fourth proportional to 8,783.82, 13,170.42 and 3,440.63 is: 5,158.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.82 : 13,170.42 = 3,440.63 : x
  2. Step 2: Convert to fraction form
    8,783.82/13,170.42 = 3,440.63/x
  3. Step 3: Cross multiply
    8,783.82x = 13,170.42 × 3,440.63
  4. Step 4: Simplify right side
    8,783.82x = 45,314,575.09
  5. Step 5: Solve for x
    x = 45,314,575.09/8,783.82
  6. Step 6: Final answer
    x = 5,158.87

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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.