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Finding the Fourth Proportional to 10,638.92, 15,958.38 and 4,799.72

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Solution

The fourth proportional to 10,638.92, 15,958.38 and 4,799.72 is: 7,199.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.92 : 15,958.38 = 4,799.72 : x
  2. Step 2: Convert to fraction form
    10,638.92/15,958.38 = 4,799.72/x
  3. Step 3: Cross multiply
    10,638.92x = 15,958.38 × 4,799.72
  4. Step 4: Simplify right side
    10,638.92x = 76,595,755.65
  5. Step 5: Solve for x
    x = 76,595,755.65/10,638.92
  6. Step 6: Final answer
    x = 7,199.58

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Similar ratio
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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.