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Finding the Fourth Proportional to 8,289.93, 11,439.09 and 4,932.90

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Solution

The fourth proportional to 8,289.93, 11,439.09 and 4,932.90 is: 6,806.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289.93 : 11,439.09 = 4,932.90 : x
  2. Step 2: Convert to fraction form
    8,289.93/11,439.09 = 4,932.90/x
  3. Step 3: Cross multiply
    8,289.93x = 11,439.09 × 4,932.90
  4. Step 4: Simplify right side
    8,289.93x = 56,427,887.06
  5. Step 5: Solve for x
    x = 56,427,887.06/8,289.93
  6. Step 6: Final answer
    x = 6,806.80

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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.