Home / 5,285.19-7,929.69-3,209.43

Finding the Fourth Proportional to 5,285.19, 7,929.69 and 3,209.43

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Solution

The fourth proportional to 5,285.19, 7,929.69 and 3,209.43 is: 4,815.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.19 : 7,929.69 = 3,209.43 : x
  2. Step 2: Convert to fraction form
    5,285.19/7,929.69 = 3,209.43/x
  3. Step 3: Cross multiply
    5,285.19x = 7,929.69 × 3,209.43
  4. Step 4: Simplify right side
    5,285.19x = 25,449,784.98
  5. Step 5: Solve for x
    x = 25,449,784.98/5,285.19
  6. Step 6: Final answer
    x = 4,815.30

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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.