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Finding the Fourth Proportional to 7,211.60, 9,951.84 and 4,067.84

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Solution

The fourth proportional to 7,211.60, 9,951.84 and 4,067.84 is: 5,613.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,211.60 : 9,951.84 = 4,067.84 : x
  2. Step 2: Convert to fraction form
    7,211.60/9,951.84 = 4,067.84/x
  3. Step 3: Cross multiply
    7,211.60x = 9,951.84 × 4,067.84
  4. Step 4: Simplify right side
    7,211.60x = 40,482,492.83
  5. Step 5: Solve for x
    x = 40,482,492.83/7,211.60
  6. Step 6: Final answer
    x = 5,613.52

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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.