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Finding the Fourth Proportional to 8,915.60, 13,375.48 and 3,072.24

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Solution

The fourth proportional to 8,915.60, 13,375.48 and 3,072.24 is: 4,609.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.60 : 13,375.48 = 3,072.24 : x
  2. Step 2: Convert to fraction form
    8,915.60/13,375.48 = 3,072.24/x
  3. Step 3: Cross multiply
    8,915.60x = 13,375.48 × 3,072.24
  4. Step 4: Simplify right side
    8,915.60x = 41,092,684.68
  5. Step 5: Solve for x
    x = 41,092,684.68/8,915.60
  6. Step 6: Final answer
    x = 4,609.08

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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.