Home / 3,787.70-5,226.49-2,108.87

Finding the Fourth Proportional to 3,787.70, 5,226.49 and 2,108.87

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Solution

The fourth proportional to 3,787.70, 5,226.49 and 2,108.87 is: 2,909.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.70 : 5,226.49 = 2,108.87 : x
  2. Step 2: Convert to fraction form
    3,787.70/5,226.49 = 2,108.87/x
  3. Step 3: Cross multiply
    3,787.70x = 5,226.49 × 2,108.87
  4. Step 4: Simplify right side
    3,787.70x = 11,021,987.97
  5. Step 5: Solve for x
    x = 11,021,987.97/3,787.70
  6. Step 6: Final answer
    x = 2,909.94

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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.