Home / 8,145.97-12,210.75-3,213.68

Finding the Fourth Proportional to 8,145.97, 12,210.75 and 3,213.68

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Solution

The fourth proportional to 8,145.97, 12,210.75 and 3,213.68 is: 4,817.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.97 : 12,210.75 = 3,213.68 : x
  2. Step 2: Convert to fraction form
    8,145.97/12,210.75 = 3,213.68/x
  3. Step 3: Cross multiply
    8,145.97x = 12,210.75 × 3,213.68
  4. Step 4: Simplify right side
    8,145.97x = 39,241,382.01
  5. Step 5: Solve for x
    x = 39,241,382.01/8,145.97
  6. Step 6: Final answer
    x = 4,817.28

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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.