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Finding the Fourth Proportional to 7,893.76, 11,836.57 and 2,626.87

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Solution

The fourth proportional to 7,893.76, 11,836.57 and 2,626.87 is: 3,938.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.76 : 11,836.57 = 2,626.87 : x
  2. Step 2: Convert to fraction form
    7,893.76/11,836.57 = 2,626.87/x
  3. Step 3: Cross multiply
    7,893.76x = 11,836.57 × 2,626.87
  4. Step 4: Simplify right side
    7,893.76x = 31,093,130.64
  5. Step 5: Solve for x
    x = 31,093,130.64/7,893.76
  6. Step 6: Final answer
    x = 3,938.95

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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.