Home / 3,581.20-5,363.70-2,123.20

Finding the Fourth Proportional to 3,581.20, 5,363.70 and 2,123.20

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Solution

The fourth proportional to 3,581.20, 5,363.70 and 2,123.20 is: 3,180.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.20 : 5,363.70 = 2,123.20 : x
  2. Step 2: Convert to fraction form
    3,581.20/5,363.70 = 2,123.20/x
  3. Step 3: Cross multiply
    3,581.20x = 5,363.70 × 2,123.20
  4. Step 4: Simplify right side
    3,581.20x = 11,388,207.84
  5. Step 5: Solve for x
    x = 11,388,207.84/3,581.20
  6. Step 6: Final answer
    x = 3,180.00

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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.