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Finding the Fourth Proportional to 8,815.41, 13,223.42 and 4,430.47

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Solution

The fourth proportional to 8,815.41, 13,223.42 and 4,430.47 is: 6,645.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.41 : 13,223.42 = 4,430.47 : x
  2. Step 2: Convert to fraction form
    8,815.41/13,223.42 = 4,430.47/x
  3. Step 3: Cross multiply
    8,815.41x = 13,223.42 × 4,430.47
  4. Step 4: Simplify right side
    8,815.41x = 58,585,965.61
  5. Step 5: Solve for x
    x = 58,585,965.61/8,815.41
  6. Step 6: Final answer
    x = 6,645.86

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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.