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Finding the Fourth Proportional to 8,630.14, 12,945.21 and 3,696.58

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Solution

The fourth proportional to 8,630.14, 12,945.21 and 3,696.58 is: 5,544.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.14 : 12,945.21 = 3,696.58 : x
  2. Step 2: Convert to fraction form
    8,630.14/12,945.21 = 3,696.58/x
  3. Step 3: Cross multiply
    8,630.14x = 12,945.21 × 3,696.58
  4. Step 4: Simplify right side
    8,630.14x = 47,853,004.38
  5. Step 5: Solve for x
    x = 47,853,004.38/8,630.14
  6. Step 6: Final answer
    x = 5,544.87

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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.