Home / 3,981.66-5,977.09-3,105.14

Finding the Fourth Proportional to 3,981.66, 5,977.09 and 3,105.14

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Solution

The fourth proportional to 3,981.66, 5,977.09 and 3,105.14 is: 4,661.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.66 : 5,977.09 = 3,105.14 : x
  2. Step 2: Convert to fraction form
    3,981.66/5,977.09 = 3,105.14/x
  3. Step 3: Cross multiply
    3,981.66x = 5,977.09 × 3,105.14
  4. Step 4: Simplify right side
    3,981.66x = 18,559,675.24
  5. Step 5: Solve for x
    x = 18,559,675.24/3,981.66
  6. Step 6: Final answer
    x = 4,661.30

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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.