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Finding the Fourth Proportional to 8,165.79, 11,268.78 and 4,439.79

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Solution

The fourth proportional to 8,165.79, 11,268.78 and 4,439.79 is: 6,126.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,165.79 : 11,268.78 = 4,439.79 : x
  2. Step 2: Convert to fraction form
    8,165.79/11,268.78 = 4,439.79/x
  3. Step 3: Cross multiply
    8,165.79x = 11,268.78 × 4,439.79
  4. Step 4: Simplify right side
    8,165.79x = 50,030,960.41
  5. Step 5: Solve for x
    x = 50,030,960.41/8,165.79
  6. Step 6: Final answer
    x = 6,126.90

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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.