Home / 3,581.74-5,371.53-2,120.50

Finding the Fourth Proportional to 3,581.74, 5,371.53 and 2,120.50

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Solution

The fourth proportional to 3,581.74, 5,371.53 and 2,120.50 is: 3,180.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.74 : 5,371.53 = 2,120.50 : x
  2. Step 2: Convert to fraction form
    3,581.74/5,371.53 = 2,120.50/x
  3. Step 3: Cross multiply
    3,581.74x = 5,371.53 × 2,120.50
  4. Step 4: Simplify right side
    3,581.74x = 11,390,329.37
  5. Step 5: Solve for x
    x = 11,390,329.37/3,581.74
  6. Step 6: Final answer
    x = 3,180.11

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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.