Home / 3,015.45-4,162.19-2,720.61

Finding the Fourth Proportional to 3,015.45, 4,162.19 and 2,720.61

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Solution

The fourth proportional to 3,015.45, 4,162.19 and 2,720.61 is: 3,755.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.45 : 4,162.19 = 2,720.61 : x
  2. Step 2: Convert to fraction form
    3,015.45/4,162.19 = 2,720.61/x
  3. Step 3: Cross multiply
    3,015.45x = 4,162.19 × 2,720.61
  4. Step 4: Simplify right side
    3,015.45x = 11,323,682.13
  5. Step 5: Solve for x
    x = 11,323,682.13/3,015.45
  6. Step 6: Final answer
    x = 3,755.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.