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Finding the Fourth Proportional to 8,885.79, 12,262.40 and 4,906.90

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Solution

The fourth proportional to 8,885.79, 12,262.40 and 4,906.90 is: 6,771.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,885.79 : 12,262.40 = 4,906.90 : x
  2. Step 2: Convert to fraction form
    8,885.79/12,262.40 = 4,906.90/x
  3. Step 3: Cross multiply
    8,885.79x = 12,262.40 × 4,906.90
  4. Step 4: Simplify right side
    8,885.79x = 60,170,370.56
  5. Step 5: Solve for x
    x = 60,170,370.56/8,885.79
  6. Step 6: Final answer
    x = 6,771.53

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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.