Home / 6,861.30-9,469.50-3,878.08

Finding the Fourth Proportional to 6,861.30, 9,469.50 and 3,878.08

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Solution

The fourth proportional to 6,861.30, 9,469.50 and 3,878.08 is: 5,352.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,861.30 : 9,469.50 = 3,878.08 : x
  2. Step 2: Convert to fraction form
    6,861.30/9,469.50 = 3,878.08/x
  3. Step 3: Cross multiply
    6,861.30x = 9,469.50 × 3,878.08
  4. Step 4: Simplify right side
    6,861.30x = 36,723,478.56
  5. Step 5: Solve for x
    x = 36,723,478.56/6,861.30
  6. Step 6: Final answer
    x = 5,352.26

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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.