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Finding the Fourth Proportional to 7,900.27, 11,893.23 and 7,211.36

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Solution

The fourth proportional to 7,900.27, 11,893.23 and 7,211.36 is: 10,856.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.27 : 11,893.23 = 7,211.36 : x
  2. Step 2: Convert to fraction form
    7,900.27/11,893.23 = 7,211.36/x
  3. Step 3: Cross multiply
    7,900.27x = 11,893.23 × 7,211.36
  4. Step 4: Simplify right side
    7,900.27x = 85,766,392.83
  5. Step 5: Solve for x
    x = 85,766,392.83/7,900.27
  6. Step 6: Final answer
    x = 10,856.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.