Home / 3,720.73-5,581.50-1,380.46

Finding the Fourth Proportional to 3,720.73, 5,581.50 and 1,380.46

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Solution

The fourth proportional to 3,720.73, 5,581.50 and 1,380.46 is: 2,070.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.73 : 5,581.50 = 1,380.46 : x
  2. Step 2: Convert to fraction form
    3,720.73/5,581.50 = 1,380.46/x
  3. Step 3: Cross multiply
    3,720.73x = 5,581.50 × 1,380.46
  4. Step 4: Simplify right side
    3,720.73x = 7,705,037.49
  5. Step 5: Solve for x
    x = 7,705,037.49/3,720.73
  6. Step 6: Final answer
    x = 2,070.84

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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.