Home / 6,205.92-8,564.16-3,689.28

Finding the Fourth Proportional to 6,205.92, 8,564.16 and 3,689.28

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Solution

The fourth proportional to 6,205.92, 8,564.16 and 3,689.28 is: 5,091.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,205.92 : 8,564.16 = 3,689.28 : x
  2. Step 2: Convert to fraction form
    6,205.92/8,564.16 = 3,689.28/x
  3. Step 3: Cross multiply
    6,205.92x = 8,564.16 × 3,689.28
  4. Step 4: Simplify right side
    6,205.92x = 31,595,584.20
  5. Step 5: Solve for x
    x = 31,595,584.20/6,205.92
  6. Step 6: Final answer
    x = 5,091.20

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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.