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Finding the Fourth Proportional to 3,197.34, 4,788.72 and 3,143.88

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Solution

The fourth proportional to 3,197.34, 4,788.72 and 3,143.88 is: 4,708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,197.34 : 4,788.72 = 3,143.88 : x
  2. Step 2: Convert to fraction form
    3,197.34/4,788.72 = 3,143.88/x
  3. Step 3: Cross multiply
    3,197.34x = 4,788.72 × 3,143.88
  4. Step 4: Simplify right side
    3,197.34x = 15,055,161.03
  5. Step 5: Solve for x
    x = 15,055,161.03/3,197.34
  6. Step 6: Final answer
    x = 4,708.65

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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.