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Finding the Fourth Proportional to 8,866.89, 12,236.31 and 4,887.99

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Solution

The fourth proportional to 8,866.89, 12,236.31 and 4,887.99 is: 6,745.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.89 : 12,236.31 = 4,887.99 : x
  2. Step 2: Convert to fraction form
    8,866.89/12,236.31 = 4,887.99/x
  3. Step 3: Cross multiply
    8,866.89x = 12,236.31 × 4,887.99
  4. Step 4: Simplify right side
    8,866.89x = 59,810,960.92
  5. Step 5: Solve for x
    x = 59,810,960.92/8,866.89
  6. Step 6: Final answer
    x = 6,745.43

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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.