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Finding the Fourth Proportional to 7,861.27, 11,808.34 and 6,631.08

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Solution

The fourth proportional to 7,861.27, 11,808.34 and 6,631.08 is: 9,960.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,861.27 : 11,808.34 = 6,631.08 : x
  2. Step 2: Convert to fraction form
    7,861.27/11,808.34 = 6,631.08/x
  3. Step 3: Cross multiply
    7,861.27x = 11,808.34 × 6,631.08
  4. Step 4: Simplify right side
    7,861.27x = 78,302,047.21
  5. Step 5: Solve for x
    x = 78,302,047.21/7,861.27
  6. Step 6: Final answer
    x = 9,960.48

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1.5x scale

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.