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Finding the Fourth Proportional to 3,448.12, 5,172.12 and 851.08

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Solution

The fourth proportional to 3,448.12, 5,172.12 and 851.08 is: 1,276.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,448.12 : 5,172.12 = 851.08 : x
  2. Step 2: Convert to fraction form
    3,448.12/5,172.12 = 851.08/x
  3. Step 3: Cross multiply
    3,448.12x = 5,172.12 × 851.08
  4. Step 4: Simplify right side
    3,448.12x = 4,401,887.89
  5. Step 5: Solve for x
    x = 4,401,887.89/3,448.12
  6. Step 6: Final answer
    x = 1,276.61

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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.