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Finding the Fourth Proportional to 8,354.77, 12,520.78 and 3,157.81

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Solution

The fourth proportional to 8,354.77, 12,520.78 and 3,157.81 is: 4,732.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,354.77 : 12,520.78 = 3,157.81 : x
  2. Step 2: Convert to fraction form
    8,354.77/12,520.78 = 3,157.81/x
  3. Step 3: Cross multiply
    8,354.77x = 12,520.78 × 3,157.81
  4. Step 4: Simplify right side
    8,354.77x = 39,538,244.29
  5. Step 5: Solve for x
    x = 39,538,244.29/8,354.77
  6. Step 6: Final answer
    x = 4,732.42

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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.