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Finding the Fourth Proportional to 3,172.60, 4,737.31 and 2,799.29

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Solution

The fourth proportional to 3,172.60, 4,737.31 and 2,799.29 is: 4,179.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.60 : 4,737.31 = 2,799.29 : x
  2. Step 2: Convert to fraction form
    3,172.60/4,737.31 = 2,799.29/x
  3. Step 3: Cross multiply
    3,172.60x = 4,737.31 × 2,799.29
  4. Step 4: Simplify right side
    3,172.60x = 13,261,104.51
  5. Step 5: Solve for x
    x = 13,261,104.51/3,172.60
  6. Step 6: Final answer
    x = 4,179.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.