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Finding the Fourth Proportional to 8,683.80, 13,016.10 and 4,522.20

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Solution

The fourth proportional to 8,683.80, 13,016.10 and 4,522.20 is: 6,778.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,683.80 : 13,016.10 = 4,522.20 : x
  2. Step 2: Convert to fraction form
    8,683.80/13,016.10 = 4,522.20/x
  3. Step 3: Cross multiply
    8,683.80x = 13,016.10 × 4,522.20
  4. Step 4: Simplify right side
    8,683.80x = 58,861,407.42
  5. Step 5: Solve for x
    x = 58,861,407.42/8,683.80
  6. Step 6: Final answer
    x = 6,778.30

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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.