Home / 3,787.31-5,226.34-2,108.78

Finding the Fourth Proportional to 3,787.31, 5,226.34 and 2,108.78

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Solution

The fourth proportional to 3,787.31, 5,226.34 and 2,108.78 is: 2,910.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.31 : 5,226.34 = 2,108.78 : x
  2. Step 2: Convert to fraction form
    3,787.31/5,226.34 = 2,108.78/x
  3. Step 3: Cross multiply
    3,787.31x = 5,226.34 × 2,108.78
  4. Step 4: Simplify right side
    3,787.31x = 11,021,222.81
  5. Step 5: Solve for x
    x = 11,021,222.81/3,787.31
  6. Step 6: Final answer
    x = 2,910.04

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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.