Home / 7,787.05-11,680.74-2,789.75

Finding the Fourth Proportional to 7,787.05, 11,680.74 and 2,789.75

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Solution

The fourth proportional to 7,787.05, 11,680.74 and 2,789.75 is: 4,184.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.05 : 11,680.74 = 2,789.75 : x
  2. Step 2: Convert to fraction form
    7,787.05/11,680.74 = 2,789.75/x
  3. Step 3: Cross multiply
    7,787.05x = 11,680.74 × 2,789.75
  4. Step 4: Simplify right side
    7,787.05x = 32,586,291.49
  5. Step 5: Solve for x
    x = 32,586,291.49/7,787.05
  6. Step 6: Final answer
    x = 4,184.68

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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.