Home / 3,518.28-4,850.64-2,189.61

Finding the Fourth Proportional to 3,518.28, 4,850.64 and 2,189.61

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Solution

The fourth proportional to 3,518.28, 4,850.64 and 2,189.61 is: 3,018.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.28 : 4,850.64 = 2,189.61 : x
  2. Step 2: Convert to fraction form
    3,518.28/4,850.64 = 2,189.61/x
  3. Step 3: Cross multiply
    3,518.28x = 4,850.64 × 2,189.61
  4. Step 4: Simplify right side
    3,518.28x = 10,621,009.85
  5. Step 5: Solve for x
    x = 10,621,009.85/3,518.28
  6. Step 6: Final answer
    x = 3,018.81

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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.