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Finding the Fourth Proportional to 10,988.92, 16,479.92 and 3,968

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Solution

The fourth proportional to 10,988.92, 16,479.92 and 3,968 is: 5,950.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.92 : 16,479.92 = 3,968 : x
  2. Step 2: Convert to fraction form
    10,988.92/16,479.92 = 3,968/x
  3. Step 3: Cross multiply
    10,988.92x = 16,479.92 × 3,968
  4. Step 4: Simplify right side
    10,988.92x = 65,392,322.56
  5. Step 5: Solve for x
    x = 65,392,322.56/10,988.92
  6. Step 6: Final answer
    x = 5,950.75

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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.