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Finding the Fourth Proportional to 2,180.57, 3,270.74 and 620.73

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Solution

The fourth proportional to 2,180.57, 3,270.74 and 620.73 is: 931.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.57 : 3,270.74 = 620.73 : x
  2. Step 2: Convert to fraction form
    2,180.57/3,270.74 = 620.73/x
  3. Step 3: Cross multiply
    2,180.57x = 3,270.74 × 620.73
  4. Step 4: Simplify right side
    2,180.57x = 2,030,243.34
  5. Step 5: Solve for x
    x = 2,030,243.34/2,180.57
  6. Step 6: Final answer
    x = 931.06

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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.