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Finding the Fourth Proportional to 8,915.22, 13,365.54 and 3,365.42

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Solution

The fourth proportional to 8,915.22, 13,365.54 and 3,365.42 is: 5,045.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.22 : 13,365.54 = 3,365.42 : x
  2. Step 2: Convert to fraction form
    8,915.22/13,365.54 = 3,365.42/x
  3. Step 3: Cross multiply
    8,915.22x = 13,365.54 × 3,365.42
  4. Step 4: Simplify right side
    8,915.22x = 44,980,588.80
  5. Step 5: Solve for x
    x = 44,980,588.80/8,915.22
  6. Step 6: Final answer
    x = 5,045.37

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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.