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Finding the Fourth Proportional to 8,906.42, 12,289.92 and 4,926.90

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Solution

The fourth proportional to 8,906.42, 12,289.92 and 4,926.90 is: 6,798.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.42 : 12,289.92 = 4,926.90 : x
  2. Step 2: Convert to fraction form
    8,906.42/12,289.92 = 4,926.90/x
  3. Step 3: Cross multiply
    8,906.42x = 12,289.92 × 4,926.90
  4. Step 4: Simplify right side
    8,906.42x = 60,551,206.85
  5. Step 5: Solve for x
    x = 60,551,206.85/8,906.42
  6. Step 6: Final answer
    x = 6,798.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.