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Finding the Fourth Proportional to 8,687.30, 13,039.63 and 4,793.54

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Solution

The fourth proportional to 8,687.30, 13,039.63 and 4,793.54 is: 7,195.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.30 : 13,039.63 = 4,793.54 : x
  2. Step 2: Convert to fraction form
    8,687.30/13,039.63 = 4,793.54/x
  3. Step 3: Cross multiply
    8,687.30x = 13,039.63 × 4,793.54
  4. Step 4: Simplify right side
    8,687.30x = 62,505,987.99
  5. Step 5: Solve for x
    x = 62,505,987.99/8,687.30
  6. Step 6: Final answer
    x = 7,195.10

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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.