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Finding the Fourth Proportional to 8,906.99, 13,360.43 and 3,640.88

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Solution

The fourth proportional to 8,906.99, 13,360.43 and 3,640.88 is: 5,461.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.99 : 13,360.43 = 3,640.88 : x
  2. Step 2: Convert to fraction form
    8,906.99/13,360.43 = 3,640.88/x
  3. Step 3: Cross multiply
    8,906.99x = 13,360.43 × 3,640.88
  4. Step 4: Simplify right side
    8,906.99x = 48,643,637.37
  5. Step 5: Solve for x
    x = 48,643,637.37/8,906.99
  6. Step 6: Final answer
    x = 5,461.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.