Home / 3,101.07-4,278.24-1,981.71

Finding the Fourth Proportional to 3,101.07, 4,278.24 and 1,981.71

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Solution

The fourth proportional to 3,101.07, 4,278.24 and 1,981.71 is: 2,733.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.07 : 4,278.24 = 1,981.71 : x
  2. Step 2: Convert to fraction form
    3,101.07/4,278.24 = 1,981.71/x
  3. Step 3: Cross multiply
    3,101.07x = 4,278.24 × 1,981.71
  4. Step 4: Simplify right side
    3,101.07x = 8,478,230.99
  5. Step 5: Solve for x
    x = 8,478,230.99/3,101.07
  6. Step 6: Final answer
    x = 2,733.97

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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.