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Finding the Fourth Proportional to 6,861.88, 9,468.86 and 4,209.29

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Solution

The fourth proportional to 6,861.88, 9,468.86 and 4,209.29 is: 5,808.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,861.88 : 9,468.86 = 4,209.29 : x
  2. Step 2: Convert to fraction form
    6,861.88/9,468.86 = 4,209.29/x
  3. Step 3: Cross multiply
    6,861.88x = 9,468.86 × 4,209.29
  4. Step 4: Simplify right side
    6,861.88x = 39,857,174.42
  5. Step 5: Solve for x
    x = 39,857,174.42/6,861.88
  6. Step 6: Final answer
    x = 5,808.49

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1.5x scale

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.