Home / 3,856.05-5,790.15-2,215.80

Finding the Fourth Proportional to 3,856.05, 5,790.15 and 2,215.80

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Solution

The fourth proportional to 3,856.05, 5,790.15 and 2,215.80 is: 3,327.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.05 : 5,790.15 = 2,215.80 : x
  2. Step 2: Convert to fraction form
    3,856.05/5,790.15 = 2,215.80/x
  3. Step 3: Cross multiply
    3,856.05x = 5,790.15 × 2,215.80
  4. Step 4: Simplify right side
    3,856.05x = 12,829,814.37
  5. Step 5: Solve for x
    x = 12,829,814.37/3,856.05
  6. Step 6: Final answer
    x = 3,327.19

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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.