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Finding the Fourth Proportional to 8,193.50, 12,290.25 and 2,721.50

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Solution

The fourth proportional to 8,193.50, 12,290.25 and 2,721.50 is: 4,082.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,193.50 : 12,290.25 = 2,721.50 : x
  2. Step 2: Convert to fraction form
    8,193.50/12,290.25 = 2,721.50/x
  3. Step 3: Cross multiply
    8,193.50x = 12,290.25 × 2,721.50
  4. Step 4: Simplify right side
    8,193.50x = 33,447,915.38
  5. Step 5: Solve for x
    x = 33,447,915.38/8,193.50
  6. Step 6: Final answer
    x = 4,082.25

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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.