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Finding the Fourth Proportional to 8,915.16, 13,370.03 and 3,719.82

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Solution

The fourth proportional to 8,915.16, 13,370.03 and 3,719.82 is: 5,578.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.16 : 13,370.03 = 3,719.82 : x
  2. Step 2: Convert to fraction form
    8,915.16/13,370.03 = 3,719.82/x
  3. Step 3: Cross multiply
    8,915.16x = 13,370.03 × 3,719.82
  4. Step 4: Simplify right side
    8,915.16x = 49,734,086.40
  5. Step 5: Solve for x
    x = 49,734,086.40/8,915.16
  6. Step 6: Final answer
    x = 5,578.60

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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.