Home / 3,981.24-5,971.91-1,384.20

Finding the Fourth Proportional to 3,981.24, 5,971.91 and 1,384.20

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Solution

The fourth proportional to 3,981.24, 5,971.91 and 1,384.20 is: 2,076.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.24 : 5,971.91 = 1,384.20 : x
  2. Step 2: Convert to fraction form
    3,981.24/5,971.91 = 1,384.20/x
  3. Step 3: Cross multiply
    3,981.24x = 5,971.91 × 1,384.20
  4. Step 4: Simplify right side
    3,981.24x = 8,266,310.90
  5. Step 5: Solve for x
    x = 8,266,310.90/3,981.24
  6. Step 6: Final answer
    x = 2,076.32

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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.