Home / 3,459.56-5,190.16-1,379.68

Finding the Fourth Proportional to 3,459.56, 5,190.16 and 1,379.68

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Solution

The fourth proportional to 3,459.56, 5,190.16 and 1,379.68 is: 2,069.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.56 : 5,190.16 = 1,379.68 : x
  2. Step 2: Convert to fraction form
    3,459.56/5,190.16 = 1,379.68/x
  3. Step 3: Cross multiply
    3,459.56x = 5,190.16 × 1,379.68
  4. Step 4: Simplify right side
    3,459.56x = 7,160,759.95
  5. Step 5: Solve for x
    x = 7,160,759.95/3,459.56
  6. Step 6: Final answer
    x = 2,069.85

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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.