Home / 3,101.41-4,279.34-1,981.48

Finding the Fourth Proportional to 3,101.41, 4,279.34 and 1,981.48

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Solution

The fourth proportional to 3,101.41, 4,279.34 and 1,981.48 is: 2,734.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.41 : 4,279.34 = 1,981.48 : x
  2. Step 2: Convert to fraction form
    3,101.41/4,279.34 = 1,981.48/x
  3. Step 3: Cross multiply
    3,101.41x = 4,279.34 × 1,981.48
  4. Step 4: Simplify right side
    3,101.41x = 8,479,426.62
  5. Step 5: Solve for x
    x = 8,479,426.62/3,101.41
  6. Step 6: Final answer
    x = 2,734.06

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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.