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Finding the Fourth Proportional to 8,485.26, 11,721.07 and 6,520.37

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Solution

The fourth proportional to 8,485.26, 11,721.07 and 6,520.37 is: 9,006.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.26 : 11,721.07 = 6,520.37 : x
  2. Step 2: Convert to fraction form
    8,485.26/11,721.07 = 6,520.37/x
  3. Step 3: Cross multiply
    8,485.26x = 11,721.07 × 6,520.37
  4. Step 4: Simplify right side
    8,485.26x = 76,425,734.13
  5. Step 5: Solve for x
    x = 76,425,734.13/8,485.26
  6. Step 6: Final answer
    x = 9,006.89

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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.