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Finding the Fourth Proportional to 8,874.88, 13,289.55 and 8,612.11

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Solution

The fourth proportional to 8,874.88, 13,289.55 and 8,612.11 is: 12,896.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,874.88 : 13,289.55 = 8,612.11 : x
  2. Step 2: Convert to fraction form
    8,874.88/13,289.55 = 8,612.11/x
  3. Step 3: Cross multiply
    8,874.88x = 13,289.55 × 8,612.11
  4. Step 4: Simplify right side
    8,874.88x = 114,451,066.45
  5. Step 5: Solve for x
    x = 114,451,066.45/8,874.88
  6. Step 6: Final answer
    x = 12,896.07

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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.