Home / 3,788.50-5,226.41-2,215.90

Finding the Fourth Proportional to 3,788.50, 5,226.41 and 2,215.90

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Solution

The fourth proportional to 3,788.50, 5,226.41 and 2,215.90 is: 3,056.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.50 : 5,226.41 = 2,215.90 : x
  2. Step 2: Convert to fraction form
    3,788.50/5,226.41 = 2,215.90/x
  3. Step 3: Cross multiply
    3,788.50x = 5,226.41 × 2,215.90
  4. Step 4: Simplify right side
    3,788.50x = 11,581,201.92
  5. Step 5: Solve for x
    x = 11,581,201.92/3,788.50
  6. Step 6: Final answer
    x = 3,056.94

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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.