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Finding the Fourth Proportional to 8,447.99, 11,662.29 and 5,620.07

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Solution

The fourth proportional to 8,447.99, 11,662.29 and 5,620.07 is: 7,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,447.99 : 11,662.29 = 5,620.07 : x
  2. Step 2: Convert to fraction form
    8,447.99/11,662.29 = 5,620.07/x
  3. Step 3: Cross multiply
    8,447.99x = 11,662.29 × 5,620.07
  4. Step 4: Simplify right side
    8,447.99x = 65,542,827.85
  5. Step 5: Solve for x
    x = 65,542,827.85/8,447.99
  6. Step 6: Final answer
    x = 7,758.40

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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.