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Finding the Fourth Proportional to 8,693.38, 13,040.07 and 3,145.44

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Solution

The fourth proportional to 8,693.38, 13,040.07 and 3,145.44 is: 4,718.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.38 : 13,040.07 = 3,145.44 : x
  2. Step 2: Convert to fraction form
    8,693.38/13,040.07 = 3,145.44/x
  3. Step 3: Cross multiply
    8,693.38x = 13,040.07 × 3,145.44
  4. Step 4: Simplify right side
    8,693.38x = 41,016,757.78
  5. Step 5: Solve for x
    x = 41,016,757.78/8,693.38
  6. Step 6: Final answer
    x = 4,718.16

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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.