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Finding the Fourth Proportional to 8,605.17, 11,868.44 and 5,771.61

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Solution

The fourth proportional to 8,605.17, 11,868.44 and 5,771.61 is: 7,960.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.17 : 11,868.44 = 5,771.61 : x
  2. Step 2: Convert to fraction form
    8,605.17/11,868.44 = 5,771.61/x
  3. Step 3: Cross multiply
    8,605.17x = 11,868.44 × 5,771.61
  4. Step 4: Simplify right side
    8,605.17x = 68,499,978.13
  5. Step 5: Solve for x
    x = 68,499,978.13/8,605.17
  6. Step 6: Final answer
    x = 7,960.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.