Home / 6,619.85-9,929.54-3,107.89

Finding the Fourth Proportional to 6,619.85, 9,929.54 and 3,107.89

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Solution

The fourth proportional to 6,619.85, 9,929.54 and 3,107.89 is: 4,661.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.85 : 9,929.54 = 3,107.89 : x
  2. Step 2: Convert to fraction form
    6,619.85/9,929.54 = 3,107.89/x
  3. Step 3: Cross multiply
    6,619.85x = 9,929.54 × 3,107.89
  4. Step 4: Simplify right side
    6,619.85x = 30,859,901.02
  5. Step 5: Solve for x
    x = 30,859,901.02/6,619.85
  6. Step 6: Final answer
    x = 4,661.73

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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.