Home / 3,317.28-4,576.68-1,989.96

Finding the Fourth Proportional to 3,317.28, 4,576.68 and 1,989.96

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Solution

The fourth proportional to 3,317.28, 4,576.68 and 1,989.96 is: 2,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,317.28 : 4,576.68 = 1,989.96 : x
  2. Step 2: Convert to fraction form
    3,317.28/4,576.68 = 1,989.96/x
  3. Step 3: Cross multiply
    3,317.28x = 4,576.68 × 1,989.96
  4. Step 4: Simplify right side
    3,317.28x = 9,107,410.13
  5. Step 5: Solve for x
    x = 9,107,410.13/3,317.28
  6. Step 6: Final answer
    x = 2,745.45

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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.