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Finding the Fourth Proportional to 8,889.93, 12,261.11 and 8,293.77

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Solution

The fourth proportional to 8,889.93, 12,261.11 and 8,293.77 is: 11,438.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.93 : 12,261.11 = 8,293.77 : x
  2. Step 2: Convert to fraction form
    8,889.93/12,261.11 = 8,293.77/x
  3. Step 3: Cross multiply
    8,889.93x = 12,261.11 × 8,293.77
  4. Step 4: Simplify right side
    8,889.93x = 101,690,784.82
  5. Step 5: Solve for x
    x = 101,690,784.82/8,889.93
  6. Step 6: Final answer
    x = 11,438.87

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1.5x scale

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.