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Finding the Fourth Proportional to 8,128.61, 12,181.98 and 5,927.03

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Solution

The fourth proportional to 8,128.61, 12,181.98 and 5,927.03 is: 8,882.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.61 : 12,181.98 = 5,927.03 : x
  2. Step 2: Convert to fraction form
    8,128.61/12,181.98 = 5,927.03/x
  3. Step 3: Cross multiply
    8,128.61x = 12,181.98 × 5,927.03
  4. Step 4: Simplify right side
    8,128.61x = 72,202,960.92
  5. Step 5: Solve for x
    x = 72,202,960.92/8,128.61
  6. Step 6: Final answer
    x = 8,882.57

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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.