Home / 3,105.19-4,284.11-2,108.74

Finding the Fourth Proportional to 3,105.19, 4,284.11 and 2,108.74

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Solution

The fourth proportional to 3,105.19, 4,284.11 and 2,108.74 is: 2,909.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.19 : 4,284.11 = 2,108.74 : x
  2. Step 2: Convert to fraction form
    3,105.19/4,284.11 = 2,108.74/x
  3. Step 3: Cross multiply
    3,105.19x = 4,284.11 × 2,108.74
  4. Step 4: Simplify right side
    3,105.19x = 9,034,052.70
  5. Step 5: Solve for x
    x = 9,034,052.70/3,105.19
  6. Step 6: Final answer
    x = 2,909.34

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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.