Home / 3,983.21-5,977.52-1,386.14

Finding the Fourth Proportional to 3,983.21, 5,977.52 and 1,386.14

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Solution

The fourth proportional to 3,983.21, 5,977.52 and 1,386.14 is: 2,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.21 : 5,977.52 = 1,386.14 : x
  2. Step 2: Convert to fraction form
    3,983.21/5,977.52 = 1,386.14/x
  3. Step 3: Cross multiply
    3,983.21x = 5,977.52 × 1,386.14
  4. Step 4: Simplify right side
    3,983.21x = 8,285,672.64
  5. Step 5: Solve for x
    x = 8,285,672.64/3,983.21
  6. Step 6: Final answer
    x = 2,080.15

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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.