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Finding the Fourth Proportional to 8,506.85, 12,760.48 and 3,241.18

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Solution

The fourth proportional to 8,506.85, 12,760.48 and 3,241.18 is: 4,861.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,506.85 : 12,760.48 = 3,241.18 : x
  2. Step 2: Convert to fraction form
    8,506.85/12,760.48 = 3,241.18/x
  3. Step 3: Cross multiply
    8,506.85x = 12,760.48 × 3,241.18
  4. Step 4: Simplify right side
    8,506.85x = 41,358,948.76
  5. Step 5: Solve for x
    x = 41,358,948.76/8,506.85
  6. Step 6: Final answer
    x = 4,861.84

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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.