Home / 3,787.89-5,227.07-2,109.21

Finding the Fourth Proportional to 3,787.89, 5,227.07 and 2,109.21

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Solution

The fourth proportional to 3,787.89, 5,227.07 and 2,109.21 is: 2,910.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.89 : 5,227.07 = 2,109.21 : x
  2. Step 2: Convert to fraction form
    3,787.89/5,227.07 = 2,109.21/x
  3. Step 3: Cross multiply
    3,787.89x = 5,227.07 × 2,109.21
  4. Step 4: Simplify right side
    3,787.89x = 11,024,977.77
  5. Step 5: Solve for x
    x = 11,024,977.77/3,787.89
  6. Step 6: Final answer
    x = 2,910.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.