Home / 7,787.76-11,682.39-2,856.21

Finding the Fourth Proportional to 7,787.76, 11,682.39 and 2,856.21

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Solution

The fourth proportional to 7,787.76, 11,682.39 and 2,856.21 is: 4,284.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.76 : 11,682.39 = 2,856.21 : x
  2. Step 2: Convert to fraction form
    7,787.76/11,682.39 = 2,856.21/x
  3. Step 3: Cross multiply
    7,787.76x = 11,682.39 × 2,856.21
  4. Step 4: Simplify right side
    7,787.76x = 33,367,359.14
  5. Step 5: Solve for x
    x = 33,367,359.14/7,787.76
  6. Step 6: Final answer
    x = 4,284.59

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1.5x scale

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.