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Finding the Fourth Proportional to 9,489.92, 14,236.92 and 2,915.60

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Solution

The fourth proportional to 9,489.92, 14,236.92 and 2,915.60 is: 4,374.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,489.92 : 14,236.92 = 2,915.60 : x
  2. Step 2: Convert to fraction form
    9,489.92/14,236.92 = 2,915.60/x
  3. Step 3: Cross multiply
    9,489.92x = 14,236.92 × 2,915.60
  4. Step 4: Simplify right side
    9,489.92x = 41,509,163.95
  5. Step 5: Solve for x
    x = 41,509,163.95/9,489.92
  6. Step 6: Final answer
    x = 4,374.03

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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.