Home / 5,742.40-8,617.92-3,889.12

Finding the Fourth Proportional to 5,742.40, 8,617.92 and 3,889.12

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Solution

The fourth proportional to 5,742.40, 8,617.92 and 3,889.12 is: 5,836.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,742.40 : 8,617.92 = 3,889.12 : x
  2. Step 2: Convert to fraction form
    5,742.40/8,617.92 = 3,889.12/x
  3. Step 3: Cross multiply
    5,742.40x = 8,617.92 × 3,889.12
  4. Step 4: Simplify right side
    5,742.40x = 33,516,125.03
  5. Step 5: Solve for x
    x = 33,516,125.03/5,742.40
  6. Step 6: Final answer
    x = 5,836.61

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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.