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Finding the Fourth Proportional to 8,365.25, 12,548.70 and 2,819.99

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Solution

The fourth proportional to 8,365.25, 12,548.70 and 2,819.99 is: 4,230.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,365.25 : 12,548.70 = 2,819.99 : x
  2. Step 2: Convert to fraction form
    8,365.25/12,548.70 = 2,819.99/x
  3. Step 3: Cross multiply
    8,365.25x = 12,548.70 × 2,819.99
  4. Step 4: Simplify right side
    8,365.25x = 35,387,208.51
  5. Step 5: Solve for x
    x = 35,387,208.51/8,365.25
  6. Step 6: Final answer
    x = 4,230.26

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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.