Home / 3,540.75-4,887.45-2,143.50

Finding the Fourth Proportional to 3,540.75, 4,887.45 and 2,143.50

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Solution

The fourth proportional to 3,540.75, 4,887.45 and 2,143.50 is: 2,958.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.75 : 4,887.45 = 2,143.50 : x
  2. Step 2: Convert to fraction form
    3,540.75/4,887.45 = 2,143.50/x
  3. Step 3: Cross multiply
    3,540.75x = 4,887.45 × 2,143.50
  4. Step 4: Simplify right side
    3,540.75x = 10,476,249.08
  5. Step 5: Solve for x
    x = 10,476,249.08/3,540.75
  6. Step 6: Final answer
    x = 2,958.77

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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.