Home / 3,180.40-4,765.08-1,720.56

Finding the Fourth Proportional to 3,180.40, 4,765.08 and 1,720.56

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Solution

The fourth proportional to 3,180.40, 4,765.08 and 1,720.56 is: 2,577.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.40 : 4,765.08 = 1,720.56 : x
  2. Step 2: Convert to fraction form
    3,180.40/4,765.08 = 1,720.56/x
  3. Step 3: Cross multiply
    3,180.40x = 4,765.08 × 1,720.56
  4. Step 4: Simplify right side
    3,180.40x = 8,198,606.04
  5. Step 5: Solve for x
    x = 8,198,606.04/3,180.40
  6. Step 6: Final answer
    x = 2,577.85

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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.