Home / 4,787.89-7,181.83-2,189

Finding the Fourth Proportional to 4,787.89, 7,181.83 and 2,189

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Solution

The fourth proportional to 4,787.89, 7,181.83 and 2,189 is: 3,283.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.89 : 7,181.83 = 2,189 : x
  2. Step 2: Convert to fraction form
    4,787.89/7,181.83 = 2,189/x
  3. Step 3: Cross multiply
    4,787.89x = 7,181.83 × 2,189
  4. Step 4: Simplify right side
    4,787.89x = 15,721,025.87
  5. Step 5: Solve for x
    x = 15,721,025.87/4,787.89
  6. Step 6: Final answer
    x = 3,283.50

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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.