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Finding the Fourth Proportional to 8,645.94, 12,969.37 and 2,802.09

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Solution

The fourth proportional to 8,645.94, 12,969.37 and 2,802.09 is: 4,203.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.94 : 12,969.37 = 2,802.09 : x
  2. Step 2: Convert to fraction form
    8,645.94/12,969.37 = 2,802.09/x
  3. Step 3: Cross multiply
    8,645.94x = 12,969.37 × 2,802.09
  4. Step 4: Simplify right side
    8,645.94x = 36,341,378.36
  5. Step 5: Solve for x
    x = 36,341,378.36/8,645.94
  6. Step 6: Final answer
    x = 4,203.29

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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.