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Finding the Fourth Proportional to 7,965.92, 10,992.88 and 4,429.44

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Solution

The fourth proportional to 7,965.92, 10,992.88 and 4,429.44 is: 6,112.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,965.92 : 10,992.88 = 4,429.44 : x
  2. Step 2: Convert to fraction form
    7,965.92/10,992.88 = 4,429.44/x
  3. Step 3: Cross multiply
    7,965.92x = 10,992.88 × 4,429.44
  4. Step 4: Simplify right side
    7,965.92x = 48,692,302.39
  5. Step 5: Solve for x
    x = 48,692,302.39/7,965.92
  6. Step 6: Final answer
    x = 6,112.58

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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.