Home / 3,139.75-4,329.32-2,003.90

Finding the Fourth Proportional to 3,139.75, 4,329.32 and 2,003.90

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Solution

The fourth proportional to 3,139.75, 4,329.32 and 2,003.90 is: 2,763.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.75 : 4,329.32 = 2,003.90 : x
  2. Step 2: Convert to fraction form
    3,139.75/4,329.32 = 2,003.90/x
  3. Step 3: Cross multiply
    3,139.75x = 4,329.32 × 2,003.90
  4. Step 4: Simplify right side
    3,139.75x = 8,675,504.86
  5. Step 5: Solve for x
    x = 8,675,504.86/3,139.75
  6. Step 6: Final answer
    x = 2,763.12

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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.