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Finding the Fourth Proportional to 8,903.90, 13,351.50 and 2,661.72

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Solution

The fourth proportional to 8,903.90, 13,351.50 and 2,661.72 is: 3,991.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903.90 : 13,351.50 = 2,661.72 : x
  2. Step 2: Convert to fraction form
    8,903.90/13,351.50 = 2,661.72/x
  3. Step 3: Cross multiply
    8,903.90x = 13,351.50 × 2,661.72
  4. Step 4: Simplify right side
    8,903.90x = 35,537,954.58
  5. Step 5: Solve for x
    x = 35,537,954.58/8,903.90
  6. Step 6: Final answer
    x = 3,991.28

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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.