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Finding the Fourth Proportional to 6,611.45, 9,916.90 and 2,715.75

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Solution

The fourth proportional to 6,611.45, 9,916.90 and 2,715.75 is: 4,073.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.45 : 9,916.90 = 2,715.75 : x
  2. Step 2: Convert to fraction form
    6,611.45/9,916.90 = 2,715.75/x
  3. Step 3: Cross multiply
    6,611.45x = 9,916.90 × 2,715.75
  4. Step 4: Simplify right side
    6,611.45x = 26,931,814.39
  5. Step 5: Solve for x
    x = 26,931,814.39/6,611.45
  6. Step 6: Final answer
    x = 4,073.51

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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.