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Finding the Fourth Proportional to 8,461.26, 12,675.49 and 7,764.19

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Solution

The fourth proportional to 8,461.26, 12,675.49 and 7,764.19 is: 11,631.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,461.26 : 12,675.49 = 7,764.19 : x
  2. Step 2: Convert to fraction form
    8,461.26/12,675.49 = 7,764.19/x
  3. Step 3: Cross multiply
    8,461.26x = 12,675.49 × 7,764.19
  4. Step 4: Simplify right side
    8,461.26x = 98,414,861.60
  5. Step 5: Solve for x
    x = 98,414,861.60/8,461.26
  6. Step 6: Final answer
    x = 11,631.23

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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.