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Finding the Fourth Proportional to 8,636.88, 12,945.60 and 6,683.16

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Solution

The fourth proportional to 8,636.88, 12,945.60 and 6,683.16 is: 10,017.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.88 : 12,945.60 = 6,683.16 : x
  2. Step 2: Convert to fraction form
    8,636.88/12,945.60 = 6,683.16/x
  3. Step 3: Cross multiply
    8,636.88x = 12,945.60 × 6,683.16
  4. Step 4: Simplify right side
    8,636.88x = 86,517,516.10
  5. Step 5: Solve for x
    x = 86,517,516.10/8,636.88
  6. Step 6: Final answer
    x = 10,017.22

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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.