Home / 3,112.36-4,669.18-2,138.92

Finding the Fourth Proportional to 3,112.36, 4,669.18 and 2,138.92

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Solution

The fourth proportional to 3,112.36, 4,669.18 and 2,138.92 is: 3,208.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.36 : 4,669.18 = 2,138.92 : x
  2. Step 2: Convert to fraction form
    3,112.36/4,669.18 = 2,138.92/x
  3. Step 3: Cross multiply
    3,112.36x = 4,669.18 × 2,138.92
  4. Step 4: Simplify right side
    3,112.36x = 9,987,002.49
  5. Step 5: Solve for x
    x = 9,987,002.49/3,112.36
  6. Step 6: Final answer
    x = 3,208.82

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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.