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Finding the Fourth Proportional to 8,620.22, 12,933.69 and 6,969.74

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Solution

The fourth proportional to 8,620.22, 12,933.69 and 6,969.74 is: 10,457.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.22 : 12,933.69 = 6,969.74 : x
  2. Step 2: Convert to fraction form
    8,620.22/12,933.69 = 6,969.74/x
  3. Step 3: Cross multiply
    8,620.22x = 12,933.69 × 6,969.74
  4. Step 4: Simplify right side
    8,620.22x = 90,144,456.54
  5. Step 5: Solve for x
    x = 90,144,456.54/8,620.22
  6. Step 6: Final answer
    x = 10,457.33

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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.