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Finding the Fourth Proportional to 8,865.22, 12,238.44 and 6,871.30

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Solution

The fourth proportional to 8,865.22, 12,238.44 and 6,871.30 is: 9,485.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.22 : 12,238.44 = 6,871.30 : x
  2. Step 2: Convert to fraction form
    8,865.22/12,238.44 = 6,871.30/x
  3. Step 3: Cross multiply
    8,865.22x = 12,238.44 × 6,871.30
  4. Step 4: Simplify right side
    8,865.22x = 84,093,992.77
  5. Step 5: Solve for x
    x = 84,093,992.77/8,865.22
  6. Step 6: Final answer
    x = 9,485.83

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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.