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Finding the Fourth Proportional to 8,912.88, 12,299.34 and 4,933.92

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Solution

The fourth proportional to 8,912.88, 12,299.34 and 4,933.92 is: 6,808.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.88 : 12,299.34 = 4,933.92 : x
  2. Step 2: Convert to fraction form
    8,912.88/12,299.34 = 4,933.92/x
  3. Step 3: Cross multiply
    8,912.88x = 12,299.34 × 4,933.92
  4. Step 4: Simplify right side
    8,912.88x = 60,683,959.61
  5. Step 5: Solve for x
    x = 60,683,959.61/8,912.88
  6. Step 6: Final answer
    x = 6,808.57

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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.