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Finding the Fourth Proportional to 8,354.15, 12,513.18 and 7,863.42

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Solution

The fourth proportional to 8,354.15, 12,513.18 and 7,863.42 is: 11,778.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,354.15 : 12,513.18 = 7,863.42 : x
  2. Step 2: Convert to fraction form
    8,354.15/12,513.18 = 7,863.42/x
  3. Step 3: Cross multiply
    8,354.15x = 12,513.18 × 7,863.42
  4. Step 4: Simplify right side
    8,354.15x = 98,396,389.88
  5. Step 5: Solve for x
    x = 98,396,389.88/8,354.15
  6. Step 6: Final answer
    x = 11,778.14

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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.