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Finding the Fourth Proportional to 7,063.76, 9,747.98 and 3,919.94

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Solution

The fourth proportional to 7,063.76, 9,747.98 and 3,919.94 is: 5,409.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,063.76 : 9,747.98 = 3,919.94 : x
  2. Step 2: Convert to fraction form
    7,063.76/9,747.98 = 3,919.94/x
  3. Step 3: Cross multiply
    7,063.76x = 9,747.98 × 3,919.94
  4. Step 4: Simplify right side
    7,063.76x = 38,211,428.38
  5. Step 5: Solve for x
    x = 38,211,428.38/7,063.76
  6. Step 6: Final answer
    x = 5,409.51

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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.