Home / 6,399.40-9,588.30-3,105.40

Finding the Fourth Proportional to 6,399.40, 9,588.30 and 3,105.40

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Solution

The fourth proportional to 6,399.40, 9,588.30 and 3,105.40 is: 4,652.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,399.40 : 9,588.30 = 3,105.40 : x
  2. Step 2: Convert to fraction form
    6,399.40/9,588.30 = 3,105.40/x
  3. Step 3: Cross multiply
    6,399.40x = 9,588.30 × 3,105.40
  4. Step 4: Simplify right side
    6,399.40x = 29,775,506.82
  5. Step 5: Solve for x
    x = 29,775,506.82/6,399.40
  6. Step 6: Final answer
    x = 4,652.86

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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.