Home / 3,857.70-5,786.55-2,217.45

Finding the Fourth Proportional to 3,857.70, 5,786.55 and 2,217.45

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Solution

The fourth proportional to 3,857.70, 5,786.55 and 2,217.45 is: 3,326.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.70 : 5,786.55 = 2,217.45 : x
  2. Step 2: Convert to fraction form
    3,857.70/5,786.55 = 2,217.45/x
  3. Step 3: Cross multiply
    3,857.70x = 5,786.55 × 2,217.45
  4. Step 4: Simplify right side
    3,857.70x = 12,831,385.30
  5. Step 5: Solve for x
    x = 12,831,385.30/3,857.70
  6. Step 6: Final answer
    x = 3,326.18

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1.5x scale

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.