Home / 7,789.13-11,684.39-3,108

Finding the Fourth Proportional to 7,789.13, 11,684.39 and 3,108

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Solution

The fourth proportional to 7,789.13, 11,684.39 and 3,108 is: 4,662.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.13 : 11,684.39 = 3,108 : x
  2. Step 2: Convert to fraction form
    7,789.13/11,684.39 = 3,108/x
  3. Step 3: Cross multiply
    7,789.13x = 11,684.39 × 3,108
  4. Step 4: Simplify right side
    7,789.13x = 36,315,068.58
  5. Step 5: Solve for x
    x = 36,315,068.58/7,789.13
  6. Step 6: Final answer
    x = 4,662.28

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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.