Home / 3,108.77-4,290.41-2,321.45

Finding the Fourth Proportional to 3,108.77, 4,290.41 and 2,321.45

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Solution

The fourth proportional to 3,108.77, 4,290.41 and 2,321.45 is: 3,203.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.77 : 4,290.41 = 2,321.45 : x
  2. Step 2: Convert to fraction form
    3,108.77/4,290.41 = 2,321.45/x
  3. Step 3: Cross multiply
    3,108.77x = 4,290.41 × 2,321.45
  4. Step 4: Simplify right side
    3,108.77x = 9,959,960.69
  5. Step 5: Solve for x
    x = 9,959,960.69/3,108.77
  6. Step 6: Final answer
    x = 3,203.83

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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.