Home / 3,983.31-5,977.68-1,386.24

Finding the Fourth Proportional to 3,983.31, 5,977.68 and 1,386.24

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Solution

The fourth proportional to 3,983.31, 5,977.68 and 1,386.24 is: 2,080.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.31 : 5,977.68 = 1,386.24 : x
  2. Step 2: Convert to fraction form
    3,983.31/5,977.68 = 1,386.24/x
  3. Step 3: Cross multiply
    3,983.31x = 5,977.68 × 1,386.24
  4. Step 4: Simplify right side
    3,983.31x = 8,286,499.12
  5. Step 5: Solve for x
    x = 8,286,499.12/3,983.31
  6. Step 6: Final answer
    x = 2,080.30

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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.